Contrast ratio results for HP LP2475w

Contrast ratio 581:1 (edge: 1638:1)
Monitor model HP LP2475w
Submitted 26 Jan 2015 04:13 CET, by 74.193.*.*
Camera model Nikon D50
Processing remarks

Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 1.9 s (Set EV to +1.9)

Black
Screen photo
Luminance 0.22 cd/m2
Luminance spread 0.14 cd/m2 (2 standard deviations)
Exposure value –2.93 stops   (aim for –2 to –3)
Exposure spread 0.95 stops
Area used for calculation 0.722 x 0.814
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 131 cd/m2
Luminance spread 32 cd/m2 (2 standard deviations)
Exposure value –1.71 stops   (aim for –2 to –3)
Exposure spread 0.36 stops
Area used for calculation 0.722 x 0.814
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
Luminance 0.08 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –4.42 stops   (aim for –2 to –3)
Exposure spread 1.29 stops
Area used for calculation 0.722 x 0.814
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: 0
{adcode}

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.