Contrast ratio results for Benq - gw2760hl

Contrast ratio 38:1
Monitor model Benq - gw2760hl
Submitted 28 Feb 2019 02:56 CET, by 24.157.*.*
Camera model Canon EOS DIGITAL REBEL XT
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 0.4 s (Set EV to +10.7)
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/230 s (Set EV to -2.2)
Warning: Image F-number settings are not the same.
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
Luminance 2.8 cd/m2
Luminance spread 2.21 cd/m2 (2 standard deviations)
Exposure value –13.23 stops   (aim for –2 to –3)
Exposure spread 1.2 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/4000   ISO: 400   F-number: 5.6
Focal length: 85.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 105 cd/m2
Luminance spread 8 cd/m2 (2 standard deviations)
Exposure value –0.31 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.39 x 0.439
Camera settings Exposure time: 1/50   ISO: 400   F-number: 3.5
Focal length: 28.1 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.