Polaroid MP4 / MP4+ Camera, MP4 System User Manual

Page 1
Appendix
MP4 / MP4+ Camera System
User Guide
Page 2
Introduction
1
Contents
About this manual
Each MP 4+ System is shipped with the operating and assembly instruc­tions for a basic system. The optional accessories and lighting units also in­clude instructions for use. All are de­signed to fit in the ring assembly inside the drawer below the baseboard.
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Introduction
2
Introduction
The Polaroid MP4+ System is an un­usually versatile photographic unit. Its uses in industry, business, medicine, research, education, the graphic arts and in a vast variety of other fields are almost unlimited. They include photo­micrography, photomacrography, copy­ing, small-object photography, gross specimen photography, X-ray copying and many others.
The camera can be used with almost all Polaroid instant film types. With these, it can complete most jobs within seconds, without a darkroom. The camera also can be used with some wet-process films.
The selection of lenses, and a macro extension, render possible a wide range of reproduction ratios, from extreme reduction to high magnifica­tion. For even higher magnification, the camera can be used with a micro­scope. With its wide selection of ac­cessories, the MP4+ is much more than just a camera - it is a complete photographic system. The versatility of the system is limited only by the imagi­nation and ingenuity of the user.
Free technical assistance
Call toll free, Mon.-Fri., 8 AM to 8 PM (Eastern Time). From any-where in the U.S.A., call 1-800-225-1618.
Or, write to: Polaroid Customer Care Center, 201 Burlington Road Bedford MA, 01730.
If outside the U.S.A., contact the nearest Polaroid Office.
The numbers throughout the text refer to the illustrations at the end of this chapter.
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Introduction 3
The two MP 4+ models
The MP4+ System is available in two basic models (Illustration 1). The Standard Model (left) is shown with the optional halogen lighting; the XLR Model (right) includes the optional tungsten lighting and base board light box.
MP 4+ Standard Model
Total camera height: 46 in. (116cm) Column height: 35 in. (90cm) Baseboard area overall: 18x23 in. (46x59cm) Standard column/camera: 44-04 Standard baseboard 11 O-l 20VAC: 44-14 Standard baseboard 220.240VAC: 44-16
MP 4+ Model XLR
Total camera height: 66 in. (168cm) Column height: 55 in. (140cm) Baseboard area overall: 23x29 in. (59x74cm) XLR column/camera: 44-05 XLR baseboard IIO-120VAC: 44-15 XLR baseboard 220-240VAC: 44-17 The Standard Model (2-left) has a non­rotating column; the XLR Model (2- right) has a rotating column.
Both models include a drawer below the baseboard (3), which contains the ring as­sembly for the instructions and also pro­vides a convenient storage area for the lenses.
Main camera parts (4)
Reflex viewer and hood Sliding camera head Camera body Shutter Lens “Exposure” cable release Column scale Camera height adjustment crank “Pre-view” cable release Film holder
The sliding camera head 44-41
The sliding head (5) fits on top of the camera bellows. The ground glass and reflex viewer are mounted on the left side; the film holders are inserted into the right side. This feature allows you to view and focus the camera without removing the film holder. You simply slide the head into position for each operation. The “pre-view” cable re­lease opens the shutter as you slide the head into the viewing position, and closes it when you slide the head into the picture-taking position.
a b c d e
f g h
i
j
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Introduction 4
TTI AVl810 8x10 camera
This camera (6) may be attached to the column in place of the standard MP 4+ camera, to allow the use of Polaroid instant 8x10 films.
Polaroid 8x10 film system
This includes the 8x10 film holder and film processor (7). The film holder also can be used with other 8x10 camera systems.
The reflex viewer 44-55
This accessory (8) attaches to the ground glass. The viewer contains a mirror, which directs the ground glass image forward, rather than upward, to make viewing and focusing much more convenient. The viewing hood on the front ex-cludes ambient light, so that the image on the ground glass may be seen most clearly.
The image you see with the reflex viewer will appear the right way up, but reversed from left to right. (This rever­sal will not, of course, appear in your picture.)
The focusing screens
The three focusing screens (9) are for use with the Polaroid film holders de­scribed below. They also can be used with most wet-process 4x5 sheet film holders, and some wet-process roll film holders. They are scribed for Polaroid 4x5 sheet film and 31/4 x 41/4 pack film formats. The image area of 4x5 pack films extends from the right-hand marking to about l/8 in. (3mm) beyond the left-hand marking.
Ground glass 44-50
This is a standard ground glass screen, for general-purpose photography.
Aerial image ground glass 44-5 7
This ground glass has a clear-glass circle in the center. The image can be focused on the ground glass in the normal way, or in the clear spot as an “aerial image”. Instructions for use are supplied with this ground glass.
Calibrated ground glass 44-54
It is calibrated in inches and centi­meters, to measure reproduction size.
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Introduction
5
The film holders
The MP 4+ System can be used with the following Polaroid instant film holders (10): Model 545 film holder for Polaroid 4x5 sheet films Model 550 film holder for Polaroid 4x5 pack films MP 4+ 44-48 film holder for Polaroid 31/4x41/4 pack films Model 405 film holder for Polaroid 31/4x41/4 pack films
With the Model 405 film holder, the location of the image area is not the same as that scribed on the ground glass. For accuracy in composition, a framing template and instructions for its use are provided with the holder.
The Model 545,550 and 405 film hold­ers also can be used with a wide vari­ety of 4x5 cameras and instruments.
In addition, a number of roll and sheet film holders for wet-process films can be used with the MP4+ System.
The MP4+ shutter kit 44-60
The MP4+ System uses a self­cocking, lensless shutter; the lenses are attached to the shutter, which is mounted in a lens board, for easy cam­era attachment. The shutter speeds range from 1 sec. to l/125 sec., and there is a “B” setting for time expo­sures. There is also a flash socket with “X” synchronization. The kit (11) in- cludes the shutter, cable release, and microscope adapter. The microscope adapter is attached to the shutter in place of a lens, for photomicrography. Instructions are provided with the kit.
Lenses for the MP4+ (12)
44-65 135m m lens; f/4.5 to f/32 44-66 105mm lens; f/4.5 to f/32 44-67 75mm lens; f/4.5 to f/32 44-68 50mm lens; f/4.5 to f/32 44-69 35mm lens; f/4.5 to f/32 44-70 17mm lens; f/4 to f/22
Film processing timer
The battery powered digital timer (13) is designed to provide accurate timing of film processing. It may be attached to any convenient location on the sys­tem.
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Introduction
6
MP 4+ Filter kit 44-88
The kit (14) includes a filter holder with two filter trays, gelatin filters and a filter frame. The filters are intended to bal­ance the MP 4+ tungsten and halogen lighting for use with Polacolor films. Filters for other purposes may be used also, as required. Complete instruc­tions are provided with the kit.
See Appendix for information about other methods of attaching filters to the MP4+ lenses.
Macro extension 44-45
The macro extension (15) is attached to the camera between the bellows and the camera head. It enables you to make photographs at magnifications up to about 27X, using the 17mm lens. You can use two extensions to increase the magnification range accordingly.
See Appendix for more information.
Universal camera mount 44-85
This accessory (16) enables you to convert the MP4+ into a 35mm copy­ing or slide-making system. The MP4+ camera head is removed, and the mount is attached to the column in its place. Virtually any 35mm camera, and many conventional cameras of other formats, can be used on the mount.
Lighting options
Several lighting options are available for the MP4+ System. These are or­dered separately, allowing the system to be customized for a wide variety of applications.
Tungsten lighting
This lighting (17) is suitable for most general purpose copystand photogra­phy. Includes four 150 watt lamps and lamp holders. The lamps are attached to the MP4+ lamp arms. 11O-l 20VAC system: 44-26 220-240VAC system: 44-36
Halogen lighting
This lighting (18, 19) is suitable for most general-purpose copy-stand photography. Includes two 300 watt lamps and lamp holders. The lamps are attached to the MP4+ lamp arms. Halogen lamps produce light of the same color temperature throughout the life of the bulb. As a result, the film ex­posure and filtration requirements are more consistent. (As tungsten lamps age, they produce light of a lower color temperature.) 120VAC system: 44-28 220VAC system: 44-38 240VAC system: 44-34
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Introduction 7
Electronic flash lighting
This lighting (20) is suitable for most general-purpose copystand photogra­phy. The system includes a 400 watt­second power supply, two lamps with 150 watt modeling lights, and a sync cord. The lamps are attached to the MP 4+ lamp arms.
Electronic flash produces light that is similar to daylight, eliminating the need for most filtration when using daylight­balanced color films. 11O-120VAC system: 44-27 220-240VAC system: 44-37
XLR Baseboard light box
The Model XLR baseboard includes a well for an optional light box (21). The light box contains four 14 watt fluores­cent lamps; its diffusion cover pro­duces even illumination across the en­tire surface. A cover fits over the light box when it is not in use. The light box is ideal when photographing transpar­ent and translucent subjects. It also can be used in combination with other light sources, to eliminate shadows around solid subjects. 11O-120VAC system: 44-18 220-240VAC system: 44-19
Fiberoptic lighting
The Dolan-Jenner fiberoptic lighting system (22) is intended for photomac­rography of small three dimensional objects. The system includes a power supply with adjustable light output, a bifurcated fiberoptic bundle, a lens/ filter adapter for each bundle, lenses and filters.
The power supply contains a 21V, 150W EKE quartz reflector lamp. 11O-120VAC system: 44-25 220-240VAC system: 44-35
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Introduction
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2
3
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Introduction
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5
6
7
8
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Introduction
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10
11
13
12
14
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Introduction
15
16
19
20
17
18
21
22
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Assembly
1
Contents
Location
Attach column to baseboard Model XLR Standard Model
Assemble the camera Attach vertical carriage to column Attach spring housing & counterweight spring Attach camera body to vertical carriage Put shutter on camera
Assemble the sliding head Attach lens to shutter Attach the ground glass Attach the reflex viewer Attach the film holder adapter
Attach the lamp arms
Attach the timer
The numbers throughout the text refer to the illustrations at the end of this chapter.
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Assembly
2
Location
The MP 4+ System should be as­sembled in the area where it will be used. The system should beplaced on a sturdy table or counter, large enough to provide a work surface next to the base­board. (A desk with locked storage space is ideal, to prevent unauthorized use.) The system must be located near an appropriate electrical outlet. Avoid placing the system near windows or other sources of bright light. Be sure the lamp arms do not extend into corridors.
DO NOT LET POWER CORD HANG OVER FRONT EDGE OF TABLE OR COUNTER, OR TOUCH HOT SUR­FACES. UNIT MUST BE GROUNDED. POWER CORD HAS THREE-PRONGED GROUNDING PLUG, WHICH MUST BE PLUGGED INTO APPROPRIATE OUTLET. IF SUCH AN OUTLET IS NOT ALREADY A V AILABLE, EXISTING OUTLET MUST BE CHANGED.
DO NOT, UNDER ANY CIRCUMSTANCES, REMOVE GROUND PRONG FROM PLUG.*
IF EXTENSION CORD IS NEEDED, USE CORD WITH GROUNDING PLUG* AND SUITABLE CURRENT RATING. CORDS RATED FOR LOWER AMPERAGE THAN UNIT MAY OVERHEAT. ARRANGE CORD SO THAT IT WILL NOT BE TRIPPED OVER OR PULLED. * THIS APPLIES ONLY IN COUNTRIES WITH GROUNDED ELECTRICAL SUPPLIES.
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Assembly 3
Attach column to baseboard
Important: Before assembling the sys-
tem, check that the camera and column serial numbers match. (The numbers are stamped on the shipping cartons.)
Model XLR
The optional light box should be in­stalled before attaching the column to the baseboard. See the instruc­tions packaged with the light box.
Position the column post as shown, with the milled section (1-a) pointing toward the center of the baseboard. Fasten the post to the baseboard using the four nuts and bolts provided. A wrench is supplied for tightening the nuts; use a suitable screwdriver to hold the bolts while you are doing this. Slide the col­umn onto the post (2) and secure it firmly with the lock-ing knob (b).
Standard Model
Hold the baseboard in a vertical posi­tion, and the column in a horizontal posi­tion (3). The scale on the column should face toward the center of the baseboard. Insert the four bolts through the column base and then through the baseboard. Add the washers, and then the nuts. Tighten the nuts with the wrench pro­vided (4); use a suitable screwdriver to hold the bolts while tightening them.
Assemble the camera
Attach vertical carriage to column
Loosen the locking lever (5-c) by at least one full rotation. Carefully push the lower end of the carriage onto the column, making sure that the two white rollers (6-d) slide down behind the rails (e). Lower the carriage further, until the two white rollers at the top rest against the top of the column (7). Slowly rotate the height adjustment crank (f) in a clockwise direction and, as the carriage slowly goes down, make sure the white rollers feed in behind the rails, as shown. Lower the carriage by about two more inches, and lock it on the column by tightening the locking lever (8-c).
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Assembly 4
Attach spring housing and counterweight spring
Insert the spring housing into the top of the column (9). The spring ends should face the front. Remove the pin (10-g) from the vertical carriage by unscrewing it and pulling it out. Unlock the vertical carriage, bring it all the way to the top of the column (11), and lock it again. Reinsert the pin, mak­ing sure that it goes through the loop
(12-h) in the spring end. Tighten the pin.
(Note: The second spring is required only when using the 8x10 camera.) Wind the vertical carriage down the column until it is at an easily accessible height (13) then lock it in position.
Warning: Never loosen or remove the spring pin unless the vertical car­riage is at the top of the column and locked in position.
Attach camera body to vertical carriage
Loosen the knob (14-i) until it is in a ver­tical position, as shown. Also loosen the screw (j) by about three full rotations. Orient the camera body as shown
(15), then push it all the way onto the
carriage (16). Rotate it back and forth slightly, until you feel it click into the true vertical position. Tighten the screw and then the knob.
Put shutter on camera
First screw the “exposure” cable release into its socket (17-k). Then align the smallest of the three tabs (18-l) on the shutter panel with the smallest of the cutouts (m) on the camera body. Push the shutter unit onto the camera in that orientation, and rotate it in a clockwise direction (19) until it comes to a firm stop. Caution: When there is no lens on the shutter, the shutter blades are exposed and unprotected. They are very delicate; do not touch them.
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Assembly
5
Assemble the sliding head
Note the orientation of the sliding head; the pins (20-n) fit into corresponding holes in the camera body.
Hook the camera head onto the left side of the camera body (21) then lower the head carefully, taking care that the pins engage in the holes on the camera body.
Lock the head in place by pushing the latch (22-o) toward the camera body.
Sliding the camera head
Depress the release button (23-p) and slide the head all the way to the right for viewing and focusing. Depress the other release button to slide the head to the left for picture-taking.
Connect the long “pre-view” cable re­lease: Do this with the camera head in the picture-taking position (pushed all the way to the left). Screw the release into the “preview” socket on the shutter
(24).
Look at the shutter from above; the shutter blades should be fully closed
(25). Now push the head all the way into
the viewing position. The shutter blades should be fully open (26). If the above does not happen, adjust the plunger end
(q) of the release until the shutter func-
tions as described. Fit the cable releases into the clamps
(27). This will prevent damage to the
shutter if the cable is accidentally pulled.
Attach lens fo shutter
Carefully screw the lens into the shutter
(28).
Attach the ground glass
One end of the ground glass frame has two small protrusions (29-r) near its base. Hold the frame in the left hand, with the protrusions pointing to the left. Slide the ground glass frame into the camera head from the left (30). Slide it all the way in, so that the two retainer pins on the frame engage securely in the two spring loops on the camera head.
Attach the reflex viewer
The pins on the sides of the viewer fit into the slots on the ground glass frame
(31).
Attach the film holder adapter
If using a Polaroid Model 545, 550 or 405 Film Holder, insert the U-shaped adapter. Orient the adapter as shown (32). Slide it all the way into the head, so the pins (s) fit under the springs (t).
Warning: When using the sliding cam­era head with heavy accessories, such as one or two macro extensions, always lock the vertical carriage on the column as soon as you have raised or lowered the camera. If you do not, the camera may begin to slide down the col-umn, due to the extra weight.
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2
3
4
5
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Assembly
6
Attach the lamp arms
The two lamp arms are fastened to the left and right sides of the baseboard, near the rear edge of the baseboard.
Orient the lamp arms so the screw faces up (33), and the angle indicator faces the front of the baseboard (34).
Insert the screws into the top twoholes in the metal plate, then tighten them firmly (35).
Orient the horizontal cross bars as shown (36). With the MP 4+ Standard Model, note that distance (u) is slightly shorter than distance (v).
Attach the cross bars: Slide the cross bars into the top of each lamp arm (37). Rotate the bar until the groove (w) points down and the second groove (x) is aligned with the fastening screw. Tighten the fastening screw to lock the bar in place.
Angle the lamp arms: Angle them as indicated by the two marks, and lock them in position with the lever. This will place the lamps in the correct position for most general copying work. For spe­cial lighting requirements, the lamp arms may be angled in any way desired. The lamp arms are designed for use with various types of lighting equipment; see the instructions packaged with your lights for details on locating the lamps on the cross bars.
Attach the timer
The timer may be attached to any con­venient location, such as the front of the sliding head (38). Simply remove the paper backing from the adhesive strip on the back of the timer, and press it into position. The timer is powered by two bat­teries; if the timer stops working, or if the display or tones fade, the batteries should be replaced. To replace the batteries, slide the door open (39), and insert the new batteries in the orientation (+/-) indicated inside the compartment.
Important: After replacing the batteries, press the SET and START buttons simultaneously, to ensure proper functioning of the timer.
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2
3
4
5
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Assembly
1
3
4
5
7
8
2
6
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Assembly
9
11
12
13
15
16
10
14
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Assembly
17
19
20
21
23
24
18
22
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Assembly
25
27
28
29
31
32
26
30
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Assembly
33
35
36
37
39
34
38
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Operations
1
Contents
Film holder use Set the film processing timer Camera operation Process the film Clean the developer rollers Lens selection Sizing and focusing Guide to exposure control Exposure correction XLR column rotation Camera body removal
The numbers throughout the text refer to the illustrations at the end of this chapter.
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Operations
2
Film holder use
Instructions for use of the Models 545, 550 and 405 film holders are provided with the holders.
MP 4+ 44-48 film holder Load the film
Generally, the film holder should be loaded before it is inserted into the camera head. Pull both sides of the latch to open the door; the door does not open flat. Before loading the film, check that the two steel rollers are clean (see
Clean the
developer rollers).
Hold the film pack by the edges, not in the center. Inset-t the pack at an angle, then push it down into position (1). Check that the white tabs are free, not caught between the pack and film holder (2). Close and latch the door, with the end of the black tab sticking out of the slot. Do not pull the black tab at this time. Remove the dark slide from the film holder (3), then insert the holder into the camera head.
Insert the film holder
44-48 film holder:
Slide the holder all the way into the right side of the camera head (4). Be sure that the two locking pins (a) on the holder engage the springs on the camera head. Pull the black tab straight, all the way out of the holder (5). A small white tab will appear. (If not, see
No white tab?)
Model 405 film holder:
Load the film in the usual manner, but do not pull the black tab. Remove the dark slide.
Model 550 film holder:
Load the film in the usual manner.
Model 545 film holder:
This holder may be loaded while inserted in the camera head. The Model 545,550 and 405 film holders fit under the U-shaped adapter (see the Assembly Chapter). Slide the film holder under the adapter, as shown (6). Push it all the way in, so it is firmly seated. Pull the black tab out of the Model 405 film holder.
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2
3
4
5
Page 26
Operations 3
Set the film processing timer
Press and hold the SET button (7) until the correct processing time is displayed (see the film instructions for recom­mended times). The timer will always return to this setting after a processing cycle.
To reset the timer to a new time:
To reset it to a longer time than is dis­played, simply press and hold the SET button until the new time is displayed. To reset it to a shorter time: Press the SET and START buttons simultaneously. The preset time is cancelled and zero is displayed. Press and hold the SET button until the new time is displayed.
Camera operation
Determine the approximate reproduction scale: Measure the original subject (or area to be photographed), and the final size needed. Select the lens to be used, and attach it to the shutter. (See
Lens
selection.
) Set the lens at its largest aperture (lowest f-number). This will provide the brightest possible image for focusing on the ground glass. Turn on the power: Press the switch on the front of the base-board (8). Then, if necessary, turn on the lights.
CAUTION: TURN OFF LIGHTS AND POWER WHEN NOT IN USE. IF SYS­TEM WILL NOT BE USED FOR AN EXTENDED PERIOD OF TIME, UN­PLUG FROM ELECTRICAL OUTLET. GRASP PLUG NOT CORD AND PULL TO DISCONNECT.
Slide the camera head into the viewing position: Depress the button (9-b) and, while holding it in, push the head all the way to the right, so that the reflex viewer/ground glass is above the lens. Place the original subject on the base­board and frame the image: If you are using a ground glass only, the image on this will appear upside down. If you are using the reflex viewer, the image will appear right side up, but reversed left to right.
1
2
1
2
3
4
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Operations 4
Size and focus the image: Turn the locking lever (10-c) in a counter-clock­wise direction, to release the carriage. While viewing the image on the ground glass, turn the crank (d) to adjust the height of the camera until the image on the ground glass is about the required size. Adjust the focusing knob (11-e) until the image is sharp. At this point, the image may not be exactly the correct size. Adjust the camera height again, and refocus. You may have to repeat this several times, until the image is both exactly the right size and also in focus. (See also
Sizing and focusing.)
Finally, lock the carriage in position by turning the locking lever in a clockwise direction, without excessive force.
Center the subject on the baseboard in the way you want to reproduce it: Remember to use the ground glass marking that is intended for the film format you are using.
Slide the camera head into the picture­taking position: Depress the button and, while holding it in, slide the head all the way to the left (12) to place the film holder above the lens. If using a Model 545 film holder, pull out the envelope (13); with a Model 550 film holder, pull out the dark slide (14).
Set shutter speed and lens aperture for correct exposure: Use the exposure guide supplied with the lights. (See also
Guide to exposure
control.) To set the shutter speed, turn the sil­ver ring to place the indicator (15-f) at the desired speed. It will click into posi­tion. Never set the indicator between shutter speeds. To set the lens aperture, turn the lens ring to place the desired aperture opposite the dot (g). The ring will click into position. The lens may be set between full aperture settings.
Make the exposure: Gently depress the plunger on the cable release (16).
5
6
7
8
10
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Operations
5
Process the film
CAUTION: IF FILM HOLDER IS AT SAME HEIGHT AS LIGHTS, TURN THEM OFF BEFORE PULLING FILM TABS, TO PREVENT BURNS AND FOGGING FILM.
Pull the white tab straight, all the way out of the film holder (17). A large yellow tab will appear. (if not, see No yellow
tab?)
Grip the yellow tab firmly, and pull it straight, at moderate speed, all the way out of the holder (18). Press the START button on the film processing timer (19). At the end of the processing time, separate the print from the negative, starting at the end nearest the yellow tab (20). Information on the handling of prints and negatives is in the film instructions. See Caution.
Caution
The Polaroid instant film process uses a caustic paste. Avoid contact with skin, eyes and mouth and keep away from children and animals. If you get some
paste on your skin, wipe it off imme­diately and wash with water to avoid an alkali burn. If eye or mouthcontact
occurs, quickly wash the area with plenty of water and see a doctor. Keep discarded materials away from children, animals, clothing and furniture.
No white tab?
Carefully open the door and, without moving the film pack, push the white tab out (21). Then close and latch the door.
No yellow tab?
Do not pull another white tab. Instead, carefully open the holder far enough to get a finger on top of the film pack to hold it down ( 22) Grasp the topmost yellow tab, and gently pull it all the way out of the holder (23) and discard it. Inspect the rollers and clean them if necessary (see
Clean the developer
rollers).
Close and latch the door, with
the next white tab sticking out.
Clean the developer rollers
Dirt on the developer rollers can cause a variety of problems, such as repeated spots on pictures and jammed film. Inspect the rollers before loading film, and clean them as follows. With both hands, lift the steel loops, and remove the roller assembly (24). Clean both rollers with a soft, lint-free cloth, dampened with water if necessary (25). Or, hold the roller assembly under clean running water. Rotate both rollers as you clean and inspect them. Note that one roller turns more easily than the other. Never scrape the rollers with any­thing metallic, nor with your fingernail, and never attempt to disassemble the rollers. Also clean the film tab slot (28).
Then replace the roller assembly.
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2
3
4
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Operations
*
6
Lens selection
Each MP 4+ lens is designed for reproductions within a specific range. This chart shows the approximate ranges; see the
Appendix Chapter
for
more details.
Lens Minimum Maximum *
135mm 10% 1.2x 105mm 20% 1.5x 75mm 1.5x 3x 50mm 1.5x 5x 35mm 5 x 7.5x 17mm 10x 20x
Use one or two macro extensions for additional magnification.
Sizing and focusing
General rule: To
increase
the size of the image on the ground glass, lower the camera and lengthen the bellows (27). To
decrease
the size of the image, raise
the camera and shorten the bellows
(28).
Reductions:
First, adjust the camera height to get the approximate image size required. Then, adjust the bellows for sharp focus. Magnifications: First, adjust the bellows to get the approxi­mate image size required. Then adjust the camera height to attain sharp focus.
Camera column scale:
When the column scale is read at the point indicated (29), it represents the film plane to baseboard distance.
Bellows scale:
The scale on the left focusing column represents the bellows extension, when it is read at the point indicated (30).
These scales can be used in conjunc­tion with the tables in the
Appendix
Chapter
to set the camera for specific
reproduction ratios.
Note:
If the
exact
reproduction ratio must be documented, place a ruler on the baseboard and photograph it with the original subject (31). Be sure the ruler is in the same plane as the original subject.
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Operations 7
Guide to exposure control
Exposure is the amount of light that reaches the film through the lens. It is controlled by the length of time the shutter is open (shutter speed) and the size of the opening in the lens (lens aperture). The shutter stays open for the length of time indicated on the ring. The num­bers signify fractions of a second; thus, 60=1/60 sec., 4=1/4 sec., 1-1 sec., etc. Each shutter speed will admit either twice as much or half as much light as the one next to it on the ring. The lens opening can be made larger or smaller. The size of the opening is measured in f-numbers, which are marked on the lens ring. The highest f-number in-dicates the smallest open­ing; the lowest f-number indicates the largest opening. Each lens opening will admit either twice as much or half as much light as the one next to it on the ring. Thus, changing from f/11 to f/8 will double the exposure; changing from f/11 to f/16 will cut the exposure in half.
Exposure correction
To increase exposure (make pictures lighter), use a longer exposure time (slower shutter speed), or a larger lens aperture (lower f-number). To decrease exposure (make pictures darker), use a shorter exposure time (faster shutter speed), or a smaller lens aperture (higher f-number).
Shutter speeds
125 60 30 15 8 4 2 1 o Darken / Lighten o
Lens openings
4.5 5.6 8 11 16 22 32 o Lighten / Darken o
Note:
When using an electronic flash system, the shutter is set at a specific speed. A control on the power supply is used to adjust the light output of the lamps to control the exposure. (See the instructions supplied with the flash unit.)
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Operations
XLR column rotation
The column of the Model XLR can be rotated through an angle of 180 de­grees, so that the camera is aimed toward the floor, rather than at the baseboard. This position can be useful if you wish to photograph something that cannot be easily accommodated on the baseboard.
Warning: Before you rotate the column, be sure to place an object, or objects, of adequate weight on the baseboard, to prevent the camera from falling over. If you have a light box in the baseboard, remove the glass cover, and replace it with the baseboard insert. Never place heavy objects on the glass cover.
To rotate the column, loosen the column locking lever (32-h), turn the entire column to the desired position, and lock the lever again. Leave the weights on the baseboard (33) until the camera head has been returned to its normal position over the baseboard.
Camera body removal
You can remove the camera body and use another camera on the MP 4+ column (such as the 8 x 10 camera or a 35mm camera, using the 44-85 Univer­sal camera mount). These accessories are de-scribed in the
Introduction
Chapter.
To remove the camera body, loosen the locking knob (34-i) until it is in a ver­tical position. Then loosen the retainer screw (j) by about three full rotations. Pull off the camera body as shown (35).
Before replacing the camera body, be sure the locking knob and retainer screw are loosened. Push the camera body on all the way, tighten the retainer screw and then the locking knob.
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Operations
1
2
5
6
3
4
7
8
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Operations
9
10
13
14
11
12
15
16
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Operations
17
18
21
22
19
20
23
24
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Operations
25
26
28
27
30
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Operations
31
32
35
33
34
Page 37
Troubleshooting
1
Contents
Picture faults and probable causes MP 4+ care and maintenance Warranty Service
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Troubleshooting
2
Picture faults and probable causes
Repeated, evenly-spaced spots:
Due to dirt on the steel developer rollers.
Missing corners or orange-red marks along edges:
Caused by pulling the
yellow tab out at an angle.
Oblong in print:
The white tab was not pulled all the way out. When the yellow tab was pulled, that white tab was pulled back into the film holder.
Many small white specks:
Caused by pulling the yellow tab out too fast. This also can cause pink lines, streaks or blotches on color prints.
Muddy-looking print:
The print was not processed for a long enough time. Underprocessed color prints may be brownish pink.
Broad streak or curtain-shaped mark:
Due to hesitation or stopping while pulling out the yellow tab.
Very light image or none at all:
The film was fogged or extremely overex­posed. See also
Operation:
Guide to
exposure control.
Nearly black or solid black image:
Caused by insufficient or no exposure. Be sure the black tab and dark slide have been removed, and that the electronic flash fired (if used). See also
Operation:
Guide to exposure control. See the instructions supplied with the film holders for additional information.
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Troubleshooting 3
MP 4+ care and maintenance
Polaroid film holders:
The two steel rollers in each film holder must be kept absolutely clean, to prevent spots on pictures and jammed film. Always check the rollers before loading film; clean them with a damp cloth as explained in the instructions packaged with the holder.
Lenses and shutter:
Never touch the surface of a lens. You can remove fin­gerprints and smudges by wiping gently with lens tissue or a soft, lint-free cloth. The elements in each lens are precisely mounted and aligned by the manu­facturer, and should be removed only by a qualified camera repair technician. The shutter is lifetime lubricated; do not attempt to either oil or adjust it.
Reflex viewer:
The reflex viewer con­tains a front-surfaced mirror, which is easily scratched or damaged. Do not touch it. Remove fingerprints with a soft, lint-free cloth; use an antistatic brush to remove dust.
Moving parts:
Never attempt to lu­bricate any part of the assembly. All moving parts are lubricated at the fac­tory, for smooth performance over a long period of time. Keep all parts of the camera clean, and cover the entire sys­tem when it is not in use.
Spare parts:
For information on parts that may be replaced by the camera owner, and for a supply of such parts, please contact the Polaroid Resource Center or the nearest Polaroid Office.
CAUTION: TO AVOID ELECTRICAL SHOCK HAZARDS, DO NOT ATTEMPT TO OPEN SWITCH UNIT OR OUTLET UNITS. IF SERVICE OR REPAIR WORK IS REQUIRED, CONTACT AUTHORIZED SERVICE CENTER.
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Troubleshooting
4
Warranty
This product has been thoroughly tested and inspected before ship-ment. All parts are guaranteed against defects in materials and workmanship for one full year from the date of original purchase.
During this period any such defects will be remedied by Polaroid Corporation without charge, except for transportation costs. The warranty does not include the bulbs, which are covered by the bulb manufacturers.
U.S.A. only: THIS WARRANTY EXCLUDES ALL CONSEQUENTIAL DAMAGES.
Outside U.S.A.: THIS WARRANTY DOES NOT AFFECT YOUR STATUTORY RIGHTS.
Service
Units damaged by accident or mishan­dling, or worn from normal use will be promptly repaired at a reasonable charge. Pack the unit carefully in its original shipping carton or other sturdy container with plenty of padding, and ship it, prepaid and insured, to the near­est Polaroid Service Center.
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Appendix
1
Contents
Depth of field Camera settings for range of
reductions and enlargements Selecting the lens Exposure strip Alternate filter attachment methods
Page 42
Appendix
2
Depth of field
The tables below and on the following page show the depth of field for each lens aperture, for a range of reproduction scales.
The indicated depth applies to Polaroid prints; the depth of field for negatives is less.
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Appendix 3
Page 44
Appendix 4
Camera settings for range of reductions and enlargements
The table below indicates the correct column and bellows settings for reduc­tions. The table on the facing page is used for enlargements; this table in­cludes the bellows settings only. With reduction work, the image is sized by adjusting the bellows, then focused by adjusting the camera height.
Important: The column settings are used for flat subjects placed directly on the baseboard. If photographing three­dimensional subjects, or subjects that are raised above the baseboard, the camera must be raised to ensure correct focus.
To increase the magnification: Lower the camera and lengthen the bellows (1).
To decrease the magnification: Raise the camera and shorten the bellows (2).
Turn the crank to raise o r lower the camera (3); the column setting is read at the point shown (4).
Turn the knob (5) to adjust the length of the bellows; read the bellows extension at the point shown (6).
1. Column must be rotated to increase film-to-subject distance; available on XLR Model only.
2. Requires XLR Model.
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Appendix
5
Page 46
Appendix
Selecting the lens
Each of the MP 4 lenses can be used for a range of reproduction sizes. The MP 4 macro extension provides increased magnification (two extensions can be used, if desired).
Often you have more than one lens/ macro extension option for a given magnification. In most cases, if you have a choice of lenses, you should use the lens of longer focal length. This will provide more working space between the lens and subject.
Four MP 4 set-ups for 3X magnification are shown:
135mm lens with two macro extensions (7). This camera set-up provides the most working space between the lens and subject, but may be awkward to use, due to its size. The distance between the view-finder and the lens will be about 26
1
/2 in./68cm. Also, when using two macro extensions, the “preview” cable elease must be disconnected and the shutter operated manually for viewing and focusing.
105mm lens with one macro extension
(8). With this set-up, there is still ample
working space between the lens and subject, and the camera is easier to use. This may be the best option for 3X mag­nification.
75mm lens alone (9). This set-up pro­vides less working space below the lens, making it more difficult to properly illuminate some subjects. If necessary, the subject may be raised above the baseboard for easier lighting.
50mm lens alone (10). With this set-up, there is very little space between the lens and subject (less than 2 in./5cm.) This will severely limit subject illumina­tion. Note that the subject must be raised above the baseboard for proper focus.
6
Page 47
Appendix
Exposure strip
The exposure guides supplied with the MP 4 lights are intended for use when the lights are positioned for general copy work. The recommended exposure settings may be inaccurate when using other lighting arrangements or mixed lighting, when photographing highly re­flective subjects and for some special­ized applications. In these situations, you can make a series of exposures on a single sheet of film to determine the correct exposure. Follow these steps:
If using a Model 545 film holder (11) pull out the film envelope and check for the negative in the usual manner before making the first exposure.
With a Model 550 film holder (12), pull the dark slide out to the line before mak­ing the first exposure.
With a Model 405 film holder (13), you must remove the reflex viewer to allow clearance for the dark slide. Pull the slide out to the line before making the first exposure.
Estimate the correct exposure, and set the camera for two or three stops less than that exposure. For example, if you think the correct exposure time will be 1/2 sec., set the shutter at 1/8 or 1/15 sec.
Pull out the dark slide (or film envelope) and make an exposure.
Push the dark slide about 3/4 in. (2Omm) back into the film holder. Then make a second exposure at the same shutter speed.
Push the dark slide another 3/4 in. and double the exposure time.
Continue pushing in the dark slide, mak­ing incremental exposures at twice the previous exposure time until the dark slide is all the way back in the film holder.
Process the film. You will have a photo­graph divided into steps with succes­sively longer exposure times. Each step will show an exposure time twice as long as the previous step and half as long as the following step. In the sample exposure strip (14) five separate expo­sures were made: 1/15 sec., 1/15 sec., 1/8 sec., 1/4 sec. and 1/2 sec.
Step a received a single exposure of 1/15-sec.
Step b received two 1/15-sec. exposures; the total exposure time was 1/8 sec.
Step c received three exposures (1/15 + 1/15 + I/8 sec.); the total exposure time was 1/4 sec.
Step d received four exposures (1/15 + 1/15 + 1/8 + 1/4 sec.); the total exposure time was 1/2 sec.
Step e received five exposures (1/15 + 1/15 + 1/8 + 1/4 + 1/ 2 sec.); the total exposure time was 1 sec.
1
2
3
4
5
6
7
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Appendix
Alternate filter attachment methods
You can use any of three types of adapter rings to attach glass filters to the MP 4 lenses: A set-screw ring slips loosely over the front of the lens mount and is held in place by a set-screw A slip-on ring slips tightly over the front of the lens mount and is held in place by friction A threaded ring screws into the front mounting threads of the lens A step-up ring enables you to use the Series 6 filters with the 35mm and 17mm lenses as well as with the other MP 4 lenses.
The table below lists the specifications for Tiffen adapter rings and glass filters for the MP 4 lenses. (Some of the adapter rings may not be readily available.) The MP 4 filter kit for electrophoresis gel photography (PID # 616364) includes a threaded filter holder and three glass-mounted filters. The holder fits the 135, 105 and 75mm lenses.
Tiffen adapter rings
Lens Filter size Set-screw Slip-on Threaded
135mm Series 6 42 SS 6 42SO6 39.5 M 6 105mm 75mm 50mm 35mm Series 5 28.5 SS 5 28.5 SO 5 27 F 5 17mm Series 5 24 SS 5 24SO5 22.5 F 5
“Tiffen” is a registered trademark of the Tiffen Manufacturing Company.
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Appendix
1
2
3
5
4
6
Page 50
Appendix
7
8
9
10
Page 51
Appendix
11
14
13
12
Page 52
MP 4 Electronic Flash System
English
Page 53
English
Electronic flash system The electronic flash lighting for the Polaroid MP 4 System is intended for general-purpose photography. The light­ing is designed to provide even illumina­tion for photographic reproductions ranging from maximum reductions to magnifications up to about five times life-size. Generally, the lamps are attached to the MP 4 lamp arms, but also may be used on separate light stands. The lamps have a modeling light that requires a 150-watt halogen bulb (ESPl5OW for 110/120-volt units; EYEl5OW for220/240-volt units). Re­placement bulbs may be purchased from your Polaroid MP 4 dealer or the nearest Polaroid Office.
1
NEVER USE LAMPS OF A HIGHER WATT AGE THAN RECOMMENDED.
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English
2
Assemble the lighting
The lamp arms and cross bars should be assembled as described in the Assembly Chapter of the main MP 4 instruction manual. The numbers throughout the text refer to the illustrations at the end of this booklet.
The lamps should be positioned on each cross bar in the locations shown in Illustration 1.
1
Place the power supply next to the baseboard, so the controls will be accessible and visible.
2
Loosen the knob on the lamp mount, and slide the lamp into its correct location on the cross bar (2).
3
Loosen the locking lever (3-a) and adjust the angle of each arm so the indicators (b) are aligned. This will place both lamp arms at the same angle and distance from the baseboard.
4
Tilt the lamps so that they are aimed at the baseboard at about a 45 angle (4). Tighten the mount-ing knobs firmly. The barn doors can be opened or closed (5) as needed to illumin-ate subjects of various sizes.
5
Run the lamp cords down the sides of the lamp arms, and clamp them at the top and bottom, using the clips provided (6).
The power supply controls (8)
Modeling light power switch:
Press 1 to turn on, or 0 to turn off. This light is used for focusing.
Main power switch:
Press 1 to turn on, or 0 to turn off. Light output setting: Al­lows youto adjust the amount of light fromthe flash. The output is shown in watt-seconds. 400 watt-seconds is full power; 50 watt-seconds is 1/8 power.
READY/TEST switch:
When the green light is on, the flash is ready to fire. Pressing the switch will fire the flash without exposing the film. There is a circuit breaker on the bottom of the power supply. Turn off the power before re-setting. If the breaker trips repeatedly, contact an Authorized Service Center for assistance.
Check that the power supply is turned off, then plug the power cord into a black outlet on the baseboard; use the black switch to turn the outlet on and off
(9) 11O-12OV system; (IO) 220-240V system.
ALWAYS TURN OFF POWER WHEN SYSTEM IS NOT IN USE. IF SYSTEM WILL NOT BE USED FOR EXTENDED PERIOD OF TIME, UNPLUG POWER CORD FROM ELECTRICAL OUTLET. GRASP PLUG NOT CORD AND PULL TO DISCONNECT.
6
Plug the sync cord into the X-socket on the power supply, and then into the shutter (7).
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English
3
Lighting options
When the electronic flash lights are aligned as shown in illustra-tion 4, they will provide even illumination of the entire base-board. This is most important when photographing large subjects, and when using high­contrast films.
When photographing small subjects, the barn doors can be closed partway to direct the light to a smaller area and to prevent stray light from reaching the lens.
Note: The exposure guide in-cluded with the lights is based on a standard alignment; if the lights are positioned in a different manner, the recommended exposure may require adjustment.
WARNING: THE LAMPS GET HOT. DO NOT TOUCH THEM OR PLACE THEM EXCESSIVELY CLOSE TO CAMERA BELLOWS, DRAPES, CLOTHING OR OTHER FLAMMABLE MATERIALS.
Replacing the modeling bulb
1
Turn off the power supply and discon­nect the power cord from the outlet on the baseboard. Re-move the lamp from the cross bar.
2
Loosen the four screws on the back of the reflector (11) and remove the front cover.
3
To remove the bulb, press down and turn it in a counter-clockwise direction.
4
Keep the bulb in its protective wrapping while installing it. Never touch the bulb with your bare fingers; fingerprints on the bulb can greatly reduce bulb life.
5
To insert the new bulb, align the pin on the base with the slot in the bulb socket (12). Press the bulb down into the socket, and turn in a clockwise direction.
6
Replace the front cover.
NEVER OPERATE LAMP WITHOUT FRONT COVER IN PLACE. TO AVOID ELECTRICAL SHOCK HAZARDS, DO NOT IMMERSE UNIT IN WATER OR OTHER FLUIDS. IF SERVICE OR REPAIR WORK IS REQUIRED, CONTACT AUTHORIZED SERVICE CENTER.
!
TURNING POWER SWITCH OFF DOES NOT DIS-CONNECT UNIT FROM ELECTRICAL SUPPLY. LOCATE POWER SUPPLY NEAR OUTLET SO IT CAN BE UNPLUGGED. DO NOT OPERATE UNIT WITH DAMAGED CORD, OR UNIT WHICH HAS BEEN DROPPED OR DAMAGED, UNTIL IT HAS BEEN EXAMINED BY AUTHORIZED SERVICE REPRESENTATIVE.
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English
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2
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