Sony DSLR-A900 User Manual

Others

Camera Type

Digital Single Lens Reflex 
Camera and 
interchangeable lenses

Lens

All of 

α Lens (except for 

DT lens*)

* Using a DT lens is not guaranteed 

because the corners of the field are 
darkened and the camera does not 
meet the primary AE performance 
standard. [APS-C size capt.] is 
automatically selected.

Total pixel number of camera

Approx. 25 720 000 pixels

Effective pixel number of camera

Approx. 24 610 000 pixels

Image format

35 mm (35.9×24.0) CMOS 
sensor

ISO sensitivity (Recommended 

exposure index)
AUTO, 100 to 6400

System

Sensor-Shift mechanism

SteadyShot Compensation capability

Approximately 2.5 to 4 EV 
decrease in shutter speed 
(varies according to 
shooting conditions and 
lens used)

System

Charge protection coating 
on Low-Pass Filter and 

image sensor-Shift 
mechanism

Type

Fixed eye-level system 
with pentaprism

Focusing Screen

Spherical Acute Matte 
(exchangeable, option)

Frame coverage

Approx. 1

Magnification

0.74 × with 50 mm lens at 
infinity, –1 m

–1

Eye point

Approximately 20 mm 
from the eyepiece

Diopter Adjustment

–3.0 to +1.0 m

–1

System

TTL phase-detection 
system, CCD line sensors 
(with center dual cross-hair 
sensor, F2.8 sensor)

Ranging point

9 points and 10 
supplementary ranging 
points

Sensitivity Range

0 to 18 EV (at ISO 100 
equivalent)

AF illuminator

Approx. 1 to 7 m (3.3 to 
23 feet)

Metering Cell

40-segment honeycomb-
pattern SPC

Metering Range

0 to 20 EV (2 to 20 EV 
with Spot metering), (at 
ISO 100 with F1.4 lens)