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Contrast ratio of Sony A7 II

Contrast ratio 295:1
Monitor model Sony A7 II
Submitted 08 Jan 2025 23:45 CET, by 109.81.*.*
Camera model Sony ILCE-7M2
Processing remarks

Note: image file 2: suggested exposure time: 1/200 s (Set EV to +1.0)

Black
Screen photo
[open image]
Luminance 0.2 cd/m2
Luminance spread 0.15 cd/m2 (2 standard deviations)
Exposure value –1.75 stops   (aim for –2 to –3)
Exposure spread 1.15 stops
Area used for calculation 0.417 x 0.469
Camera settings Exposure time: 2.5   ISO: 400   F-number: 2.8
Focal length: 30 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 59 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –3.51 stops   (aim for –2 to –3)
Exposure spread 0.88 stops
Area used for calculation 0.417 x 0.469
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 30 mm   (35 mm equivalent)
Exposure compensation: 0

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.