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Contrast ratio results for DELL S2340l

Contrast ratio 1170:1
Monitor model DELL S2340l
Submitted 04 Feb 2017 21:12 CET, by 195.174.*.*
Camera model Canon EOS 6D
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 6.1 s (Set EV to +2.6)
Warning: image file 2: camera was zoomed in too much.
Note: image file 2: suggested exposure time: 1/190 s (Set EV to +1.1)
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
[open image]
Luminance 0.05 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –5.11 stops   (aim for –2 to –3)
Exposure spread 0.8 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 169 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 57 cd/m2
Luminance spread 70 cd/m2 (2 standard deviations)
Exposure value –3.56 stops   (aim for –2 to –3)
Exposure spread 2.08 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 207 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.