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Contrast ratio results for Viewsonic VA2261

Contrast ratio 97:1 (edge: 52:1)
Monitor model Viewsonic VA2261
Submitted 18 Nov 2020 07:51 CET, by 103.149.*.*
Camera model Canon EOS 6D
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 11.1 s (Set EV to +5.5)
Note: image file 2: suggested exposure time: 1/8 s (Set EV to -1.1)
Warning: image file 3: Overexposed. Please decrease the shutter time.
Note: image file 3: suggested exposure time: 6.0 s (Set EV to -2.4)

Black
Screen photo
[open image]
Luminance 0.03 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –7.97 stops   (aim for –2 to –3)
Exposure spread 0.4 stops
Area used for calculation 0.686 x 0.772
Camera settings Exposure time: 1/4   ISO: 400   F-number: 2.8
Focal length: 49.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 2.59 cd/m2
Luminance spread 1.07 cd/m2 (2 standard deviations)
Exposure value –1.37 stops   (aim for –2 to –3)
Exposure spread 0.61 stops
Area used for calculation 0.686 x 0.772
Camera settings Exposure time: 1/4   ISO: 400   F-number: 2.8
Focal length: 49.4 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.05 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0.08 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.686 x 0.772
Camera settings Exposure time: 32   ISO: 400   F-number: 2.8
Focal length: 49.4 mm   (35 mm equivalent)
Exposure compensation: 0
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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.