Contrast ratio results for HP ZR2740w

Contrast ratio 1150:1
Monitor model HP ZR2740w
Submitted 22 Mar 2014 21:14 CET, by 89.133.*.*
Camera model Nikon D2X
Processing remarks

Note: image file 1: suggested exposure time: 1.3 s (Set EV to +1.1)
Warning: Image F-number settings are not the same.

Black
Screen photo
Luminance 0.35 cd/m2
Luminance spread 0.15 cd/m2 (2 standard deviations)
Exposure value –3.63 stops   (aim for –2 to –3)
Exposure spread 0.62 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 0.6   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 406 cd/m2
Luminance spread 51 cd/m2 (2 standard deviations)
Exposure value –2.09 stops   (aim for –2 to –3)
Exposure spread 0.18 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4.5
Focal length: 27 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.