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Contrast ratio results for mhfj

Contrast ratio 50675:1
Monitor model mhfj
Submitted 22 Apr 2022 13:35 CEST, by 60.242.*.*
Camera model samsung SM-G955F
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 42.2 s (Set EV to +13.8)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –16.35 stops   (aim for –2 to –3)
Exposure spread 1.6 stops
Area used for calculation 0.361 x 0.407
Camera settings Exposure time: 1/350   ISO: 400   F-number: 1.7
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 131 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –0.72 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.394 x 0.349
Camera settings Exposure time: 1/350   ISO: 400   F-number: 1.7
Focal length: 26 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.