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Cameras
Sony

Sony a9 III

Camera

The sensor, in perspective.

Capture area at a shared scale. The dashed outline is a 36 × 24 mm full-frame reference.

Cameras

Sony a9 III

Sensor area indexGeometric · full frame = 100
97.8
Active dimensions
35.60 × 23.73 mm
Active area
844.79 mm²
Crop factor
1.01 ×
Area vs full frame
-0.03 stops

The index is calculated from area, assuming equal scene illumination, f-number and exposure time. It is not a low-light test or an image-quality score: lens transmission, quantum efficiency, noise and processing are not included. A crop mode changes the area used, not the physical sensor.

Dynamic range ≠ EV operating range. Autofocus and metering limits describe operating conditions. Manufacturer HDR claims appear separately below; independent dynamic-range measurements require a matched test method, ISO and noise threshold.

Sensor specifications

Reference active width
35.60 mm
Reference active height
23.73 mm
Sensor technology
CMOS
Reference capture area
3:2 Open Gate (Full Frame Stills)

Capture & exposure

Camera family
Mirrorless
Shutter
Global

Capture modes

3 capture modes
  • 3:2 Open Gate (Full Frame Stills)
    Active height
    23.73 mm
    Active width
    35.60 mm
    Horizontal pixels
    6,000 px
    Vertical pixels
    4,000 px
  • 4K UHD - Wide (Video)
    Active height
    20.02 mm
    Active width
    35.60 mm
    Horizontal pixels
    3,840 px
    Vertical pixels
    2,160 px
  • 1080p HD - Wide
    Active height
    20.03 mm
    Active width
    35.60 mm
    Horizontal pixels
    1,920 px
    Vertical pixels
    1,080 px