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Contrast ratio results for Iiyama GB2560HSU

Contrast ratio 1086:1 (edge: 1673:1)
Monitor model Iiyama GB2560HSU
Submitted 02 Apr 2020 16:57 CEST, by 62.235.*.*
Camera model Canon PowerShot SX540 HS
Processing remarks

Note: image file 1: suggested exposure time: 2.2 s (Set EV to +1.1)
Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 3.4 s (Set EV to +1.7)

Black
Screen photo
[open image]
Luminance 0.2 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –3.62 stops   (aim for –2 to –3)
Exposure spread 0.46 stops
Area used for calculation 0.345 x 0.345
Camera settings Exposure time: 1   ISO: 400   F-number: 3.4
Focal length: 23.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 218 cd/m2
Luminance spread 67 cd/m2 (2 standard deviations)
Exposure value –2.19 stops   (aim for –2 to –3)
Exposure spread 0.45 stops
Area used for calculation 0.345 x 0.345
Camera settings Exposure time: 1/403   ISO: 400   F-number: 3.4
Focal length: 23.9 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –4.24 stops   (aim for –2 to –3)
Exposure spread 0.63 stops
Area used for calculation 0.345 x 0.345
Camera settings Exposure time: 1   ISO: 400   F-number: 3.4
Focal length: 23.9 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.