Contrast ratio results

Contrast ratio 1:1
Monitor model
Submitted 14 Jul 2009 21:55 CEST, by 77.249.*.*
Camera model Kodak EASYSHARE M753 ZOOM DIGITAL CAMERA
Processing remarks

Note: image file 1: suggested exposure time: 1/500 s (Set EV to -1.3)
Note: image file 2: suggested exposure time: 1/500 s (Set EV to -1.4)

Black
Screen photo
Luminance 147 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –1.07 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.534 x 0.534
Camera settings Exposure time: 1/184   ISO: 400   F-number: 2.8
Focal length: 37 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 149 cd/m2
Luminance spread 33 cd/m2 (2 standard deviations)
Exposure value –1.15 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 0.534 x 0.534
Camera settings Exposure time: 1/198   ISO: 400   F-number: 2.8
Focal length: 37 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.