Sony SAL300F28G User Manual
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Lens for Digital Single Lens
Reflex Camera
Operating Instructions
300mm F2.8 G
SAL300F28G
©2006 Sony Corporation Printed in Japan
This lens is designed for Sony cameras.
WARNING
To reduce fire or shock hazard, do not expose the unit to rain or moisture.
Do not directly look at the sun through this lens.
Doing so might harm your eyes or cause loss of eyesight.
Keep the lens out of reach of small children.
There is danger of accident or injury.
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European Union and other
European countries with separate collection
systems)
This symbol on the product or on its packaging indicates that
this product shall not be treated as household waste. Instead it
shall be handed over to the applicable collection point for the
recycling of electrical and electronic equipment. By ensuring this product is
disposed of correctly, you will help prevent potential negative consequences
for the environment and human health, which could otherwise be caused
by inappropriate waste handling of this product. The recycling of materials
will help to conserve natural resources. For more detailed information
about recycling of this product, please contact your local Civic Office, your
household waste disposal service or the shop where you purchased the
product.
For the customers in the U.S.A.
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.
OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE,
AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE
RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE
UNDESIRED OPERATION.
CAUTION
You are cautioned that any changes or modifications not expressly approved
in this manual could void your authority to operate this equipment.
NOTE:
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
For the customers in Canada
This Class B digital apparatus complies with Canadian ICES-003.
Notes on use
• Do not leave the lens in direct sunlight. If sunlight is focused onto a nearby
object, it may cause a fire. If circumstances necessitate leaving the lens in direct
sunlight, be sure to attach the lens cap.
• Be careful not to subject the lens to mechanical shock while attaching it.
• Always place the lens caps on the lens when storing.
• Do not keep the lens in a very humid place for a long period of time to prevent
mold.
• Hold both the camera and lens, when you carry the camera with the lens
attached.
• Do not touch the lens contacts. If dirt, etc., gets on the lens contacts, it may
interfere or prevent the sending and receiving of signals between the lens and the
camera, resulting in operational malfunction.
Vignetting
When you use lens, the corners of the screen become darker than the center.
To reduce this phenomena (called vignetting), close the aperture by 1 to 2
stops.
Condensation
If your lens is brought directly from a cold place to a warm place,
condensation may appear on the lens. To avoid this, place the lens in a plastic
bag or something similar. When the air temperature inside the bag reaches
the surrounding temperature, take the lens out.
Cleaning the lens
• Do not touch the surface of the lens directly.
• If the lens gets dirty, brush off dust with a lens blower and wipe with a soft,
clean cloth (Cleaning Cloth KK-CA (optional) is recommended).
• Do not use any organic solvent, such as thinner or benzine, to clean the lens or
the camera cone.
Attaching/detaching the lens
To attach the lens
1 Remove the front and rear lens caps and the camera body cap.
2 Align the orange index on the lens barrel with the orange index on the
camera (mounting index), then insert the lens into the camera mount and
rotate it clockwise until it locks.
• Do not press the lens release button on the camera when mounting the lens.
• Do not mount the lens at an angle.
To remove the lens
While pressing and holding the lens release button on the camera, rotate the
lens counterclockwise until it stops, then detach the lens.
Attaching a tripod
Attach the tripod to the lens, not to the camera.
To change vertical/horizontal position
Loosen the collar-locking knob on the tripod-mounting collar (1) and rotate the camera either
direction. The camera can be quickly switched between vertical and horizontal positions while
maintaining stability when using a tripod.
• Gray indexes (collar indexes) are located at 90° intervals on the tripod-mounting collar. Align a
gray index on the tripod-mounting collar with the gray index (collar index) on the lens to adjust the
camera position precisely (2).
• Tighten the collar-locking knob firmly after the camera position is set.
To detach the tripod-mounting collar
The tripod-mounting collar can be detached.
(1) (2)
(3) (4)
1 Remove the lens from the camera.
• See “ Attaching/detaching the lens” for details.
2 Loosen the collar-locking knob (1).
3 Rotate the tripod-mounting collar to align the red index on the tripod-
mounting collar (collar mounting index next to SET/RELEASE) with the
orange index on the lens (mounting index) (3).
4 Move the tripod-mounting collar towards the lens mount and detach the tripod-mounting collar from the lens (4).
Attaching the lens hood
It is recommended that you use a lens hood to reduce flare and ensure maximum image quality.
Loosen the locking screw on the lens hood and slip the lens hood over the front
of the lens. Check that lens hood is attached properly, and then tighten the
screw.
• When using a built-in camera flash, make sure to remove the lens hood to avoid blockage of the
flash light.
• When storing, turn the lens hood back over the lens, and tighten the screw to secure the lens hood
to the lens.
Names of parts
1···Focusing ring 2···Distance scale 3···Depth-of-field
scale 4···Collar mounting index (red) 5···Lens index
(gray) 6···Collar index (gray) 7···Lens contacts 8···Filter
holder 9···Filter-holder lock 10···Distance index
11···Protective element 12···Focus-hold buttons 13···Focusmode switch 14···Strap eyelet 15···DMF-mode switch
16···Lens mounting index 17···Focus-range setting switch
18···Prefocus set button 19···Audio-signal switch 20···Collarlocking knob 21···Focus-hold/prefocus switch 22···Focusrange limiter
Attaching the strap
Attach the strap so that the lens can be carried easily. Follow steps (1) and (2) to attach the
strap.
• To prevent the lens from dropping, be sure to attach the strap properly so that the strap will not
come loose from the lens.
(1) (2)
Focusing
To switch AF (auto focus)/MF (manual focus)
The focus mode can be switched between AF and MF on the lens.
For AF photography, both the camera and lens should be set to AF. For MF photography, either or both the camera or lens
should be set to MF.
• The focusing ring can be rotated slightly past the infinity to provide accurate focusing under various operating temperatures. Do not
rotate the focusing ring all the way to the end when focusing manually, even at infinity. Look through the viewfinder and set the focus
precisely.
To set the focus mode on the lens
Slide the focus-mode switch to the appropriate mode, AF or MF (1).
• Refer to the camera manuals to set the focus mode of the camera.
• In MF, turn the focusing ring to adjust the focus (2) while looking through the viewfinder. The focus signal in the viewfinder
indicates the current condition of the focus.
To use a camera equipped with an AF/MF control button
• Press the AF/MF control button to switch AF to MF when both the camera and lens are set to AF.
• Press the AF/MF control button to switch MF to AF when the camera is set to MF and the lens is set to AF.
(1)
(2)
Direct manual focus (DMF)
Even when AF is set, the setting is switched to MF automatically if you rotate the focusing ring while pressing the shutter button halfway. This provides quick fine
adjustment of focusing (DMF). Select the mode for correct DMF from the following. Set the DMF-mode switch to whichever you prefer.
Standard DMF (Std.)
Rotate the focusing ring to set correct DMF when the focus is locked in AF-A (automatic auto focus) or AF-S (single-shot
auto focus). Using this mode is recommended for normal subjects.
• DMF is not available in AF-C (continuous auto focus), when out of focus, or with continuous advance in AF-A after the second focus
is confirmed.
Full-time DMF (F TIME)
In any AF mode (AF-A/S/C), rotate the focusing ring while pressing the shutter button halfway to set correct DMF. This is useful to catch a fast-moving subject.
Depth-of-field scale
When focus is set on a subject, anything at that same distance will appear sharp, and anything within a certain range before and beyond the subject will also appear
in focus; this is called depth of field. Depth of field depends on the subject distance and aperture you choose and is indicated by the lines on the depth-of-field scale
corresponding to the aperture.
• The depth-of-field scale and depth-of-field table are for 35mm-format cameras. The depth-of-field is shallower when you use Digital Single Lens Reflex Cameras equipped
with an APS-C sized image sensor.
Using focus-hold buttons
This lens has 4 focus-hold buttons.
Press the focus-hold button in AF to cancel AF. The focus is fixed and you can release the shutter on the fixed focus. Release
the focus-hold button while pressing the shutter button halfway to start AF again.
Set the focus-hold/prefocus switch to FOCUS HOLD and press the focus-hold button.
• The function of the focus-hold button can be changed on cameras with custom function capability. Refer to the camera manuals for
details.
Switching focus range (AF range)
The focus-range limiter enables you to reduce the auto focusing time. This is useful when the subject distance is definite. You can also set the desired focus range
and select it.
Slide the focus-range limiter to select the focus range.
• FULL: The focus range is not limited. AF is set to the entire focus range.
• ∞ - 6.4m: AF is set to 6.4 m (21 feet) to infinity.
• SET: AF is set to the appointed focus range, both far and near positions.
To set the focus range
1 Slide the focus-range limiter to SET.
2 Focus the lens to the desired far or near distance.
• The focusing distance can be set in any focus mode: AF, MF or DMF.
• The far and near focusing distance can be set in either order.
3 Slide the focus-range setting switch to FAR or NEAR for the appropriate focus range position (depending on which position you set
first).
• The focus-range setting switch automatically returns to the original position.
• If the audio-signal switch is on, it beeps when you set the focus range.
• The focus range to be set is effective until a new focus range is set.
Changing the plug-in filters
A normal filter is equipped with your lens.
• The filter is a part of optical system component. Be sure to attach either the normal filter or the polarizing (circular) filter when taking pictures.
To change the plug-in filter
1 Push down the filter-holder lock and turn it counterclockwise 90° towards the lens front until the orange
index is aligned with the filter holder, and then lift the filter holder up.
2 Align the filter-holder lock orange index with the filter holder, face the side with the filter to the camera
body, and then insert the filter holder into the lens barrel.
3 Push down the filter-holder lock and turn it 90° to lock.
• The filter-holder lock orange index is perpendicular to the holder.
To use the plug-in polarizing (circular) filter
1 Adjust the focus while looking through the viewfinder.
2 Rotate the adjust ring on the plug-in polarizing (circular) filter holder to adjust degree of polarization for shooting.
• The polarizing (circular) filter can reduce or eliminate unwanted reflections (polarized light) from nonmetallic surfaces of water, glass, windows, shiny plastics,
ceramics, paper, etc. It can also filter out polarized light from the atmosphere in general to produce richer colors. You can adjust the polarizing degree to get good
contrast when taking photos of blue sky.
• Generally, reflected light (polarization) should be minimized in photography, however you can adjust the polarizing degree for the desired effect.
• The amount of light reaching the image sensor decreases. If your camera is set to manual exposure mode and you are using a hand-held exposure meter, or if your
camera is set to manual exposure mode and you are using the Manual Flash Control function available on some external flash units, adjust the exposure compensation by
opening the aperture 1 or 2 stops to the + side.
Specifications
Equivalent
Name
(Model name)
300mm F2.8 G
(SAL300F28G)
*1 The value for equivalent 35mm-format focal length is based on Digital Single Lens Reflex Cameras equipped with an APS-C sized image sensor.
*2 The values of lens groups and elements include the protective element and plug-in filter.
*3 The value of angle of view 1 is based on 35mm-format cameras, and that of angle of view 2 is based on Digital Single Lens Reflex Cameras equipped with an APS-C sized
image sensor.
*4 Minimum focus is the shortest distance from the image sensor to the subject.
• This lens is equipped with a distance encoder. The distance encoder allows more accurate measurement (ADI) by using a flash for ADI.
• Depending on the lens mechanism, the focal length may change with any change of the shooting distance. The focal length assumes the lens is focused at infinity.
Included items: Lens (1), Front lens cap (1), Rear lens cap (1), Lens hood (1), Strap (1), Normal filter (1), Plug-in polarizing (circular) filter (1), Trunk (1), Set of
printed documentation
Designs and specifications are subject to change without notice.
35mm-format
focal length*1
(mm)
450 12-13 8°10’ 5°20’ 2.0 (8.2) 0.18 f/32
Lens
groups-
elements*
Angle of
view 1*
2
Angle of
3
view 2*
3
Minimum
focus*4
(m (feet))
Maximum
magnification
(×)
Minimum
f-stop
Filter
diameter
(mm)
42
(exclusive use)
Dimensions
(maximum
diameter × height)
(mm (in.))
Approx. 122×242.5
(5 1/16×9 3/8)
Mass (g (oz.))
(excluding
tripod-mounting
collar)
Approx. 2,310
(81 1/2)
Using prefocus
A specific subject distance can be stored and recalled at any time. With the distance set, this is useful for catching fast-moving subjects, such as a moving train,
events at a sports festival, or horse and car races, etc.
To set the subject distance
1 Slide the focus-hold/prefocus switch to PREFOCUS.
2 Focus the lens on the distance to be set.
• The focusing distance can be set in any focus mode: AF, MF or DMF.
3 Press the prefocus set button to store the subject distance.
• The stored subject distance is effective until a new subject distance is set.
• If the audio-signal switch is on, it beeps when you store the subject distance.
To recall the preset subject distance
1 Slide the focus-hold/prefocus switch to PREFOCUS.
• Set the focus hold button function to “focus hold” for cameras with custom function capability.
2 Press the focus-hold button so that the lens will focus to the prefocus position.
• When AF is set, press and hold the focus-hold button while taking pictures. If the focus-hold button is released, AF will be reactivated and the subject focus distance will
be changeable.
• If the audio-signal switch is on, it beeps when the preset subject distance is recalled.
Using the audio signal
The audio signal beeps when the foc
button.
Slide the audio-signal switch to to set the signal on.
To set the signal off, slide the audio-signal switch to OFF.
is a trademark of Sony Corporation.
Depth-of-field table (in meters)
f/2.8 f/4 f/5.6 f/8 f/11 f/16 f/22 f/32
∞
30m
15m
10m
7m
5m
4m
3m
2.5m
2m
921-∞ 651-∞ 460-∞ 326-∞ 230-∞ 163-∞ 115-∞ 81.6-∞
29.1-31.0 28.7-31.4 28.2-32.0 27.6-33.0 26.7-34.3 25.5-36.5 24.0-40.1 22.2-46.5
14.8-15.2 14.7-15.3 14.6-15.5 14.4-15.7 14.2-16.0 13.8-16.4 13.4-17.1 12.8-18.1
9.90-10.1 9.87-10.1 9.81-10.2 9.74-10.3 9.63-10.4 9.49-10.6 9.29-10.8 9.02-11.2
6.95-7.05 6.94-7.06 6.91-7.09 6.88-7.13 6.83-7.18 6.76-7.26 6.66-7.38 6.53-7.54
4.98-5.02 4.97-5.03 4.96-5.04 4.94-5.06 4.92-5.09 4.88-5.12 4.84-5.17 4.77-5.25
3.99-4.02 3.98-4.02 3.98-4.03 3.97-4.04 3.95-4.05 3.93-4.07 3.90-4.10 3.86-4.15
2.99-3.01 2.99-3.01 2.99-3.01 2.98-3.02 2.98-3.03 2.97-3.04 2.95-3.05 2.93-3.07
2.50-2.51 2.49-2.51 2.49-2.51 2.49-2.51 2.49-2.52 2.48-2.52 2.47-2.53 2.46-2.55
1.997-2.003 1.997-2.003 1.996-2.004 1.99-2.01 1.99-2.01 1.99-2.01 1.98-2.02 1.98-2.02
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