Polaroid MP-4, MP-4 PLUS Manual

Photomacrography

with the MP-4

Exposure Guide

Selecting the right lens for photomacrography

Basic Focusing Steps

Magnification Tables

MP4/MP4+ Exposure Guide1

How to determine recommended shutter speed:

Table A: Find the number that applies to the speed of the film you are using.

Table B: Measure the length of the material being copied and the length of its focused image on the ground glass (to determine the reproduction scale). Find the corresponding number in the table.

Table C: Decide which lens f-stop you wish to use. Find the number that corresponds to that f-stop.

Table D: Add the numbers you get from Tables A, B, and C. Find that number in Table D, and see the suggested shutter speed. If your total has a 1/2 in it, use the next higher full number from Table D.

Table A
Film Speed
ISO3000/36° .............	1
ISO800/30° ...............	3
ISO400/27° ...............	4
ISO200/24° ...............	5
ISO100/21° ...............	6
ISO80/20° .................	6 1/2
ISO50/18° .................	7
ISO25/15° .................	8
ISO3/6° .....................	11

With color films, adjust the speed to compensate for filter factors.

Table B

Reproduction Scale

1:10 to 1:5 ...............	1
1:4 to 1:2 .................	2
1:1 ...........................	3
1.5X .........................	3 1/2
2X ............................	4
3X ............................	5
4X ............................	5 1/2
5X ............................	6
6X ............................	6 1/2
7X, 8X ......................	7
9X, 10X ....................	8

Measure the length of the original and its length on the ground glass to determine the reproduction scale.

	Table D
	(Total of A + B + C)
Shutter Speed
(exposure time)*	Shutter Speed
7 ...............................................................	1/125 sec.
8 ....................................................................	1/60
9 ....................................................................	1/30
10 ....................................................................	1/15
11 ......................................................................	1/8
12 .....................................................................	1/4
13 .....................................................................	1/2
14 ...................................................................	1 sec.
15 ......................................................................	2
16 .....................................................................	6**
17 ....................................................................	15**
18 ....................................................................	40**
19 ...............................................................	1 ½ min.**
20 .................................................................	4 min.**

*Filtration will be necessary for Polacolor films. See the current film instructions for specific details.

**Includes compensation for low light-level reciprocity failure. This compensation is an average for Polaroid instant films in general, and thus a rough guide only. Note that color films will require filtration in addition to a longer exposure.

For information or technical assistance:

From within the U.S., call toll-free 1-800-343-5000, Monday-Friday, 8 AM to 8 PM (Eastern Time).

If outside the U.S., contact the nearest Polaroid office.

Table C
Lens Aperture
f/4.5 .......................	1/2
f/5.6 .......................	1
f/8 ..........................	2
f/11 .........................	3
f/16 ........................	4
f/22 ........................	5
f/32 ........................	6

When setting the lens between two f-stops, use half numbers. Thus, for f/11-f/16 use 3½.

1This is intended as a guide, not a precise exposure indicator. You may have to compensate for unpredictable variables which affect exposure, such as brightness of window or room lighting, differences in color or contrast of the subject material, voltage fluctuations, or the age of the lamps.