Contrast ratio results for hp crt

Contrast ratio 277:1
Monitor model hp crt
Submitted 11 Dec 2012 10:16 CET, by 85.66.*.*
Camera model Fujifilm A170 A180
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Note: image file 2: suggested exposure time: 1/24 s (Set EV to -0.6)

Black
Screen photo
Luminance 0.11 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –3.04 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 0.462 x 0.462
Camera settings Exposure time: 8   ISO: 100   F-number: 2.9
Focal length: 32 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 30 cd/m2
Luminance spread 3 cd/m2 (2 standard deviations)
Exposure value –3.93 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 0.462 x 0.462
Camera settings Exposure time: 1/64   ISO: 100   F-number: 2.9
Focal length: 32 mm   (35 mm equivalent)
Exposure compensation: -2

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.