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Contrast ratio results for HP PAVILLION DV7 1232nr

Contrast ratio 253:1
Monitor model HP PAVILLION DV7 1232nr
Submitted 17 Feb 2012 03:57 CET, by 68.63.*.*
Camera model Olympus E-520
Processing remarks

Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/280 s (Set EV to -0.5)

Black
Screen photo
[open image]
Luminance 0.51 cd/m2
Luminance spread 0.75 cd/m2 (2 standard deviations)
Exposure value –1.98 stops   (aim for –2 to –3)
Exposure spread 2.73 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1.3   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 1.7
White
Screen photo
[open image]
Luminance 129 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –0.28 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1/60   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 1.7

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.