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Contrast ratio of HP LP2475w

Contrast ratio 373:1
Monitor model HP LP2475w
Submitted 26 Jan 2015 03:57 CET, by 74.193.*.*
Camera model Nikon D50
Processing remarks

Note: image file 1: suggested exposure time: 0.5 s (Set EV to -1.1)

Black
Screen photo
[open image]
Luminance 0.33 cd/m2
Luminance spread 0.22 cd/m2 (2 standard deviations)
Exposure value –1.36 stops   (aim for –2 to –3)
Exposure spread 0.99 stops
Area used for calculation 0.722 x 0.814
Camera settings Exposure time: 1   ISO: 400   F-number: 2
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 125 cd/m2
Luminance spread 26 cd/m2 (2 standard deviations)
Exposure value –1.46 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.722 x 0.814
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2
Focal length: 52 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.