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Contrast ratio of ViewSonic E70f (CRT)

Contrast ratio 6934:1
Monitor model ViewSonic E70f (CRT)
Submitted 06 Nov 2014 05:20 CET, by 177.204.*.*
Camera model Sony NEX-F3
Processing remarks


Black
Screen photo
[open image]
Luminance 0.07 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –2.27 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.374 x 0.424
Camera settings Exposure time: 6   ISO: 1600   F-number: 6.3
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 1.3
White
Screen photo
[open image]
Luminance 507 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –0.74 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.374 x 0.424
Camera settings Exposure time: 1/400   ISO: 1600   F-number: 6.3
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0.3

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.