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Contrast ratio results for HP ZR24W

Contrast ratio 353:1
Monitor model HP ZR24W
Submitted 16 Aug 2010 17:24 CEST, by 178.191.*.*
Camera model Fujifilm FinePix F30
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Note: image file 1: suggested exposure time: 2.5 s (Set EV to +1.3)
Warning: image file 2: camera was zoomed in too much.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/140 s (Set EV to +1.6)

Black
Screen photo
[open image]
Luminance 0.24 cd/m2
Luminance spread 0.35 cd/m2 (2 standard deviations)
Exposure value –3.82 stops   (aim for –2 to –3)
Exposure spread 2.74 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1   ISO: 200   F-number: 2.8
Focal length: 160 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 84 cd/m2
Luminance spread 39 cd/m2 (2 standard deviations)
Exposure value –4.05 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/416   ISO: 200   F-number: 2.8
Focal length: 160 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.