On Focal Length - Sony SLT-A37 Instruction Manual
Interchangeable lens digital camera
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Also See for SLT-A37:
- Instruction manual (326 pages) ,
- Handbook (209 pages) ,
- Specifications (35 pages)
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Available languages
Available languages
Name (Model name)
Minimum focus** (m
(feet))
Maximum
magnification (X)
Minimum f-stop
Filter diameter (mm)
Dimensions (maximum
diameter × height)
(approx., mm (in.))
Mass (approx., g (oz.))
* The values for equivalent 35mm-format focal length and angle of view are based
on Interchangeable Lens Digital Camera equipped with an APS-C sized image
sensor.
** 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.
• The infinity position provides for some adjustment to compensate for focus shift
caused by change in temperature. To shoot a subject at infinite distance in MF mode,
use the viewfinder and set focus.
On focal length
The picture angle of this camera is narrower than that of a 35 mm-format
camera. You can find the approximate equivalent of the focal length of a 35 mm-
format camera, and shoot with the same picture angle, by increasing the focal
length of your lens by half.
For example, by using a 50 mm lens, you can get the approximate equivalent of
a 75 mm lens of a 35 mm-format camera.
DT 18-55mm
F3.5-5.6 SAM
(SAL1855)
0.25 (0.82)
0.34
f/22-36
55
69.5×69
(2 3/4 × 2 3/4)
210 (7 4/8)
DT 55-200mm
F4-5.6 SAM
(SAL55200-2)
0.95 (3.2)
0.29
f/32-45
55
71.5×85
(2 7/8 × 3 3/8)
305 (10 3/4)
Specifications
DT 18-135mm
F3.5-5.6 SAM
(SAL18135)
0.45 (1.48)
0.25
f/22-36
62
76×86
(3 × 3 1/2)
398 (14)
51
GB
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