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CamerasARRI Alexa 65
Camera
The sensor, in perspective.
Capture area at a shared scale. The dashed outline is a 36 × 24 mm full-frame reference.
ARRI Alexa 65
- Sensor area indexGeometric · full frame = 100From declared pixel array and pixel size.
- 160.2
- Active dimensions
- 54.12 × 25.58 mm
- Active area
- 1,384.12 mm²
- Crop factor
- 0.72 ×
- Area vs full frame
- 0.68 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
- 54.12 mm
- Reference active height
- 25.58 mm
- Sensor technology
- CMOS
- Reference capture area
- 6.5K 2.12:1 Open Gate
Capture & exposure
- Camera family
- Cinema
- Shutter
- Electronic Rolling Shutter
Capture modes
5 capture modes
- 6.5K 2.12:1 Open Gate
- Active height
- 25.58 mm
- Active width
- 54.12 mm
- Horizontal pixels
- 6,560 px
- Vertical pixels
- 3,100 px
- 5.1K 16:9
- Active height
- 23.76 mm
- Active width
- 42.24 mm
- Horizontal pixels
- 5,120 px
- Vertical pixels
- 2,880 px
- 4.5K LF 3:2
- Active height
- 25.54 mm
- Active width
- 36.70 mm
- Horizontal pixels
- 4,448 px
- Vertical pixels
- 3,096 px
- 4.3K 3:2
- Active height
- 23.76 mm
- Active width
- 35.64 mm
- Horizontal pixels
- 4,320 px
- Vertical pixels
- 2,880 px
- 4K UHD
- Active height
- 17.82 mm
- Active width
- 31.68 mm
- Horizontal pixels
- 3,840 px
- Vertical pixels
- 2,160 px
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