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Contrast ratio of Samsung LC27RG50

Contrast ratio 4556:1
Monitor model Samsung LC27RG50
Submitted 19 Aug 2024 22:55 CEST, by 207.6.*.*
Camera model Canon EOS 5D Mark III
Processing remarks

Note: image file 1: suggested exposure time: 2.5 s (Set EV to +1.3)

Black
Screen photo
[open image]
Luminance 0.09 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –3.84 stops   (aim for –2 to –3)
Exposure spread 1.93 stops
Area used for calculation 0.674 x 0.758
Camera settings Exposure time: 1   ISO: 100   F-number: 1.2
Focal length: 48.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 393 cd/m2
Luminance spread 81 cd/m2 (2 standard deviations)
Exposure value –0.68 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.674 x 0.758
Camera settings Exposure time: 1/512   ISO: 100   F-number: 1.2
Focal length: 48.5 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.