Sony SAL135F28 Operating Instructions


4-271-845-03(1)
1
/
Interchangeable Lens/
Objectif interchangeable/
/
Operating Instructions/Mode d'emploi/Manual de
instrucciones/
135mm F2.8 [T4.5] STF
SAL135F28 
A-mount –1
©2006 Sony Corporation
(1)
–2

Printed in Japan




*1
*2

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
-114.8 -97.8 -82.3 -69.2 -49.0
     
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
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
3.068-2.935 3.080-2.924 3.096-2.910 3.115-2.894 3.165-2.852 3.239-2.795
3m
2.027-1.974 2.032-1.969 2.038-1.963 2.046-1.956 2.065-1.939 2.094-1.915
2m
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
1.2m 1.028-1.192 1.209-1.191 1.211-1.189 1.213-1.187 1.219-1.182 1.226-1.175
1.0m 1.005-0.995 1.006-0.994 1.007-0.993 1.008-0.992 1.011-0.989 1.016-0.985
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
2
3
4
5
9 8 7 6
F No.2.8 5.7 T No.4.5 6.7*
* T No. T
2.8
4.5
(2)
T No.
A
E

E



1 2 3
4 5 6 A
7 8 9

( – )
 
1
(1) (2) 2

(2)
2


(  –  )

*3


*4



T/16 T/22 T/32
-34.7 -24.6 -17.4
  
16.48-7.20 22.58-6.46
6.15-4.22 6.80-3.97
3.350-2.719 3.522-2.618
2.135-1.882 2.198-1.837
1.567-1.439 1.597-1.415
1.238-1.165 1.254-1.151
1.023-0.978 1.033-0.970
0.885-0.856 0.891-0.850
T No.

 -  *1)
A  -  *2 2
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
T4.5 6.7
lenses.
* T No. (T-Numbers) : the T No. is a practical value that indicates how much
A M P

A S M
4.5 5.6 6.7

4.5 5.6 3


This lens is designed for A-mount, which can be used on Sony α cameras.

Notes on use
4.5
A

T No.
A A


*3. *4.A


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
35mm APS-C
8···Distance index 9···Depth-of-field scale
1
 Attaching/detaching the lens

To attach the lens (See illustration –.)
AUTO
1
2
1 1
+1 + 3 4 + 1 2 + 1 4 0
0.25X 0.20X 0.15X 0.08X 0.029X
To remove the lens (See illustration –.)
0.87 1.0 1.2 2.0 5.0
While pressing and holding the lens release button on the camera,
m
rotate the lens counterclockwise until it stops, then detach the lens.
 Attaching lens hood
( )
135mm F2.8 [T4.5] STF (SAL135F28) It is recommended that you use a lens hood to reduce flare and ensure
35mm * 1 (mm) 202.5 maximum image quality.
Fit the hood into the mount on the end of the lens barrel and rotate
6-8* 2
the hood clockwise.
1* 3 18
2* 3 12

* 4 (m) 0.87
 Focusing
( ) 0.25
F31(T32)
This lens is a manual-focus lens.
(mm) 72 Turn the focusing ring until the image appears sharp.
(mm) 80 99

(g) 730
* 1 35mm APS-C 
* 2
* 3 1 35mm 2 APS-C
* 4
(1) (1)
(1) (1) (1)
1 ND
T No.
F No.
2
English
 Aperture
This lens has two aperture control systems: stepless aperture, which provides
You will find information on using each lens in this manual. Precautions
stepless aperture ring (- *1) adjustment, and automatic aperture (A
common to lenses, such as notes on use will be found in "Precautions
position) for traditional manual-focus lens (- *2) adjustment on the
before using" on a separate sheet. Be sure to read both documents before
camera. Use the aperture ring to switch between the two systems. Stepless
using the lens.
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.)
light is in the lens, allowing for the lens's transmission rate. Although this
A slight click can be felt at the T/4.5, T/5.6, and T/6.7 marks.
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
The index marks between T/4.5 and T/5.6 represent 1/3 aperture values.

aperture value on the lens, the value indicated on a camera, and the value used
Stop-down metering is used when the stepless aperture is selected.

when determining the exposure are all indicated by T No. Use the T No. as a
When shooting, the aperture values set by the aperture ring are used. Those

normal aperture value.
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.
When using this lens with an E-mount camera, attach a separately sold Mount
All exposure modes (P, A, S, M) can be used on the camera.
Adaptor. Do not attach the lens directly to the E-mount camera or you may 
*3.Stepless aperture range *4.A position
damage both.
When you carry the camera with the lens attached, make sure to hold both the
 Depth of field (in meters)
camera and the lens steadily.
Do not hold the camera by the lens part extended for focusing.
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
Remove the rear and front lens caps and the camera body cap.
stop.)
You can attach/detach the lens front cap in two ways, (1) and (2). When

Exposure
you attach/detach the lens cap with the lens hood attached, use method (2). +1
correction
Align the orange index on the lens barrel with the orange index
Magnification
0.25X
on the camera (mounting index), then insert the lens into the ratios
camera mount and rotate it clockwise until it locks.
Distance
0.87
 Do not press the lens release button on the camera when mounting the lens.
Do not mount the lens at an angle.

Specifications
Name (Model name)
Equivalent 35mm-format focal length*
(mm)
Lens groups-elements
3
Angle of view 1*
Angle of view 2* 3
4
Minimum focus* (m (feet))
Maximum magnification (×)
When storing, turn over the lens hood and place it onto the lens backwards. Minimum f-stop
Filter diameter (mm)
Dimensions (maximum diameter × height)
(mm (in.))
Mass (g (oz.))
The value for the equivalent 35mm-format focal length is based on
This lens can be used in manual-focus mode, even if your camera is set to * 1
Interchangeable Lens Digital Cameras equipped with an APS-C sized image
autofocus mode.
sensor.
The focus signal found in the viewfinder, etc., does not work.
* Including apodization element (1-2)
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.
Minimum focus is the distance from the image sensor to the subject.
* 4
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.
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.
+ 3 4 + 1 2 + 1 4 0
0.20X 0.15X 0.08X 0.029X
1.0 1.2 2.0 5.0
m
135mm F2.8 [T4.5] STF
(SAL135F28)
1 202.5
6-8*
2
18°
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)
Apodization element Apodization element