Sony 135mm f2.8 STF Manual de Usario
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(1) (2)
1···Focusing ring 2···Distance scale 3···Stepless
aperture range 4···Lens contacts 5···Mounting index
6···A position 7···Aperture ring 8···Distance index
9···Depth-of-field scale
1 2
3
5
79 8
4
6
This lens is a manual focus lens with a highly developed defocusing
design. A special apodization element gives defocused areas a smooth and
attractive appearance. This lens is equipped with the aperture ring that
enables a stepless aperture setting between F No.2.8-5.7 (T No.4.5-6.7 ), and *
makes the most of the defocusing effect in the foreground and background
areas. Enjoy this unique image-expression, which cannot be duplicated on
traditional lenses.
* T No. (T-Numbers) : the T No. is a practical value that indicates how much
light is in the lens, allowing for the lens’s transmission rate. Although this
lens’s wide-open aperture is f/2.8, the special apodization system provides the
light amount of T/4.5, which is the same as that of f/4.5 on a normal lens. The
aperture value on the lens, the value indicated on a camera, and the value used
when determining the exposure are all indicated by T No. Use the T No. as a
normal aperture value.
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.
• Do not hold the camera by the lens part extended for focusing, etc.
• 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.
Names of parts
©2006 Sony Corporation Printed in Japan
SAL135F28
Lens for Digital Single Lens
Reflex Camera
Operating Instructions
135mm F2.8 [T4.5] STF
2-685-150- (1)11
Attaching/detaching the lens
To attach the lens
1 Remove the rear and front lens caps and the camera body cap.
• You can attach/detach the front lens cap in two ways, (1) and (2). When you attach/detach the
lens cap with the lens hood attached, use method (2).
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 the lens hood
It is recommended that you use a lens hood to reduce flare and ensure maximum image
quality.
Align the lens hood with the tip of the lens and rotate it clockwise.
• When using a built-in camera flash, make sure to remove the lens hood to avoid blockage of the
flash light.
• When storing, turn over the lens hood and place it onto the lens backwards.
Focusing
This lens is a manual-focus lens.
1 Select manual-focus mode on your camera.
• Refer to the camera manual for details.
• This lens can be used in manual-focus mode, even if your camera is set to autofocus mode.
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.
2 Turn the focusing ring until the image appears sharp.
• The focus signal found in the viewfinder does not work.
Stepless aperture range
A position
Stepless aperture
Automatic aperture (functioning
when set to the A position)
+1
0.25X 0.20X 0.15X 0.08X 0.029X
0.87 1.0 1.2 2.0 5.0
m
0+ 3
/
4+1
/
2+1
/
4
Exposure correction
Magnification ratios
Distance
Apodization element
Intensity decreases gradually
toward the perimeter
Gradually diffused without losing
shape
Intensity stays the same Line becomes thicker
Specifications
Name
(Model name)
Equivalent
35mm-format
focal length*1
(mm)
Lens
groups-
elements
Angle of
view 1*3
Angle of
view 2*3
Minimum
focus*4
(m (feet))
Maximum
magnification
(×)
Minimum
f-stop
Filter
diameter
(mm)
Dimensions
(maximum
diameter × height)
(mm (in.))
Mass
(g (oz.))
135mm
F2.8 [T4.5] STF
(SAL135F28)
202.5 6-8*218° 12° 0.87 (2.85) 0.25 f/31
(T/32) 72 Approx. 80×99
(3 1/8×3 7/8)
Approx. 730
(25 3/4)
*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
Including apodization element (1-2)
*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.
Included items: Lens (1), Front lens cap (1), Rear lens cap (1), Lens hood (1), Exclusive case (1), Set of printed documentation
Designs and specifications are subject to change without notice.
is a trademark of Sony Corporation.
Aperture
This lens has two aperture settings; A position and a stepless aperture control. Use
the aperture ring to switch between the two settings. T No. is used in both notation
and control on the camera and lens.
To use the stepless aperture setting
This setting allows stepless control of the aperture between T/4.5 - T/6.7. Turn the
aperture ring to set the desired aperture.
• This stepless range is recommended when a large aperture is desired.
• Set your camera to A mode or M mode when using this setting. (In P mode or scene-
selection setting, the settings will be the same as A mode. In S mode, the settings will
be the same as M mode.)
• A slight click can be felt at the T/4.5, T/5.6, and T/6.7 marks.
• The index marks between T/4.5 and T/5.6 represent 1/3 aperture values.
• Stop-down metering is used when the stepless aperture is selected.
• When shooting, the aperture values set by the aperture ring are used. Those values are
not accurately reflected in the values displayed or recorded by the camera.
To use the A position
This setting (A position) allows the lens to be used the same way as traditional manual-focus lenses. Set the aperture on
your camera.
• All exposure modes (P, A, S, M) can be used on the camera.
Aperture Information
This lens has two apertures; the stepless aperture, manually controlled with
the aperture ring, and the automatic aperture (A position), controlled by
the camera. In the stepless aperture setting, emphasis is put on the aperture
shape, which is rounder than the automatic aperture. For large aperture
settings, selecting the stepless aperture is recommended.
Depth of field (in meters)
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.
T/4.5 T/5.6 T/6.7 T/8 T/11 T/16 T/22 T/32
∞∞
114.8
∞
97.8
∞
82.3
∞
69.2
∞
49.0
∞
34.7
∞
24.6
∞
17.4
10m 10.91
9.23
11.08
9.11
11.32
8.96
11.61
8.79
12.44
8.37
13.84
7.84
16.48
7.20
22.58
6.46
5m 5.21
4.81
5.24
4.78
5.29
4.74
5.35
4.69
5.51
4.58
5.76
4.42
6.15
4.22
6.80
3.97
3m 3.068
2.935
3.080
2.924
3.096
2.910
3.115
2.894
3.165
2.852
3.239
2.795
3.350
2.719
3.522
2.618
2m 2.027
1.974
2.032
1.969
2.038
1.963
2.046
1.956
2.065
1.939
2.094
1.915
2.135
1.882
2.198
1.837
1.5m 1.514
1.478
1.156
1.484
1.519
1.481
1.523
1.478
1.533
1.469
1.547
1.456
1.567
1.439
1.597
1.415
1.2m 1.028
1.192
1.209
1.191
1.211
1.189
1.213
1.187
1.219
1.182
1.226
1.175
1.238
1.165
1.254
1.151
1.0m 1.005
0.995
1.006
0.994
1.007
0.993
1.008
0.992
1.011
0.989
1.016
0.985
1.023
0.978
1.033
0.970
0.87m 0.873
0.867
0.874
0.866
0.874
0.866
0.875
0.865
0.877
0.863
0.881
0.860
0.885
0.856
0.891
0.850
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.
Exposure compensation
As the magnification increases, the amount of light reaching the image sensor decreases. This is automatically
compensated in all autoexposure modes, or in the manual exposure mode as long as the exposure is adjusted according
to the camera’s meter index. If your camera is set to the manual exposure mode and you are using a hand-held exposure
meter, or if your camera is set to the manual exposure mode and you are using the Manual Flash Control function
available on some external flash units, adjust exposure accordingly.
(E.g., when adjusting by the aperture, +1 means opening the aperture 1 more stop.)
About Apodization
A special “apodization element” is situated near the aperture of the lens
optical system. This special optical element is a type of ND filter which
gradually becomes thicker (darker) towards the perimeter, thereby reducing
the amount of light that passes through around the outer perimeter. The
aperture of this lens is indicated and controlled by the T No., which
compensates for the reduction imposed by the special apodization element.
The T No. can be used as the F No. on a normal lens when the exposure is
determined.
Principle of defocusing effect improvement
Defocusing of a dot Defocusing of a line
This lens
Theoretical ideal
traditional lens
Defocused images appear as blurred clusters of dots. A lens with well compensated aberration reproduces the
image shape accurately, but cannot produce smooth blurs in a defocused area. There may be unpleasant blurs,
which for example, make one line appear to be doubled, depending on the way of compensation. This lens adopts a
special apodization element that provides a gradually diffused image toward the perimeter without losing the core
shape. In other words, it provides soft and natural defocusing without transforming the original shape unnaturally.
Especificaciones del producto
| Marca: | Sony |
| Categoría: | Lente |
| Modelo: | 135mm f2.8 STF |
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