F No.2.8 5.7 T No.4.5 6.7*
* T No. T
2.8
4.5 4.5
T No.
T No.
A
E
E
1
1 2 3
4 5 6 A
7 8 9
(
–
)
1
(1) (2) 2
(2)
2
(
–
)
1 ND
T No.
T No. F No.
2
-
*1)
A
-
*2 2
(
–
)
T4.5 6.7
A M P
A S M
4.5 5.6 6.7
4.5 5.6 3
A
A A
*3. *4.A
35mm APS-C
AUTO
1 1
+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
( )
135mm F2.8 [T4.5] STF (SAL135F28)
35mm *
1
(mm) 202.5
6-8*
2
1*
3
18
2*
3
12
*
4
(m) 0.87
( ) 0.25
F31(T32)
(mm) 72
(mm) 80 99
(g) 730
*
1
35mm APS-C
*
2
*
3
1 35mm 2 APS-C
*
4
(1) (1)
(1) (1) (1)
English
You will find information on using each lens in this manual. Precautions
common to lenses, such as notes on use will be found in “Precautions
before using” on a separate sheet. Be sure to read both documents before
using the lens.
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 A-mount, which can be used on Sony α cameras.
Notes on use
When using this lens with an E-mount camera, attach a separately sold Mount
Adaptor. Do not attach the lens directly to the E-mount camera or you may
damage both.
When you carry the camera with the lens attached, make sure to hold both the
camera and the lens steadily.
Do not hold the camera by the lens part extended for focusing.
Precautions for flash use
When using a built-in camera flash, make sure to remove the lens hood and
shoot from at least 1 m (3.3 feet) away from your subject. With certain of
lens/flash combinations, the lens may partially block the light of the flash,
resulting in a shadow at the bottom of the picture.
Names of parts
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
Attaching/detaching the lens
To attach the lens (See illustration
–
.)
1
Remove the rear and front lens caps and the camera body cap.
You can attach/detach the lens front 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 (See illustration
–
.)
While pressing and holding the lens release button on the camera,
rotate the lens counterclockwise until it stops, then detach the lens.
Attaching lens hood
It is recommended that you use a lens hood to reduce flare and ensure
maximum image quality.
Fit the hood into the mount on the end of the lens barrel and rotate
the hood clockwise.
When storing, turn over the lens hood and place it onto the lens backwards.
Focusing
This lens is a manual-focus lens.
Turn the focusing ring until the image appears sharp.
This lens can be used in manual-focus mode, even if your camera is set to
autofocus mode.
The focus signal found in the viewfinder, etc., does not work.
SAL135F28
135mm F2.8 [T4.5] STF
/
Operating Instructions/Mode d'emploi/Manual de
instrucciones/
/
Interchangeable Lens/
Objectif interchangeable/
A-mount
4-271-845-03(1)
©2006 Sony Corporation
Printed in Japan
Aperture
This lens has two aperture control systems: stepless aperture, which provides
stepless aperture ring (- *1) adjustment, and automatic aperture (A
position) for traditional manual-focus lens (- *2) adjustment on the
camera. Use the aperture ring to switch between the two systems. Stepless
aperture places emphasis on the aperture shape, and provides a rounder
defocused area than that of an image taken with automatic aperture. Stepless
aperture is recommended for large aperture settings.
To use the stepless aperture setting (See illustration
–
.)
This setting allows stepless control of the aperture between T/4.5 - T/6.7.
Turn the aperture ring to set the desired aperture.
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
Set the aperture ring to the A position (position indicated by A). Set the
aperture on your camera.
All exposure modes (P, A, S, M) can be used on the camera.
*3.Stepless aperture range *4.A position
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 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 Interchangeable Lens
Digital Cameras equipped with an APS-C sized image sensor.
Exposure compensation
The brightness of the lens decreases with macro shooting. This is
automatically compensated for in all auto-exposure modes, or in metered
manual mode. If your camera is set to the manual exposure mode and
you are using a commercially-available exposure meter, set plus exposure
compensation. Test shooting is recommended to determine the appropriate
degree of compensation.
(E.g., when adjusting by the aperture, +1 means opening the aperture 1 more
stop.)
Exposure
correction
Magnification
ratios
Distance
+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
Specifications
Name (Model name)
135mm F2.8 [T4.5] STF
(SAL135F28)
Equivalent 35mm-format focal length*
1
(mm)
202.5
Lens groups-elements 6-8*
2
Angle of view 1*
3
18°
Angle of view 2*
3
12°
Minimum focus*
4
(m (feet))
0.87 (2.85)
Maximum magnification (×)
0.25
Minimum f-stop
f/31 (T/32)
Filter diameter (mm)
72
Dimensions (maximum diameter × height)
(mm (in.))
Approx. 80×99 (3 1/8×3 7/8)
Mass (g (oz.))
Approx. 730 (25 3/4)
*
1
The value for the equivalent 35mm-format focal length is based on
Interchangeable Lens Digital 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 Interchangeable Lens Digital Cameras equipped
with an APS-C sized image sensor.
*
4
Minimum focus is the distance from the image sensor to the subject.
Included items: Lens (1), Lens front cap (1), Lens rear cap (1), Lens hood (1),
Lens case (1), Set of printed documentation
Designs and specifications are subject to change without notice.
is a trademark of Sony Corporation.
–1
(1) (2)
–2
*3
*4
*2
*1
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
Intensity decreases gradually
toward the perimeter
Gradually diffused without losing shape
Theoretical ideal
traditional lens
Intensity stays the same
Line becomes thicker
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.
Apodization elementApodization element
m
/Depth-of-field table (in meters)/Tableau de profondeur de champ (en
mètres)/Tabla de profundidad de campo (en metros)/
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
