Contrast ratio results

Black
Contrast ratio	3183:1
Monitor model
Submitted	02 Jan 2010 06:41 CET, by 190.20..
Camera model	Kodak EASYSHARE M753 ZOOM DIGITAL CAMERA
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 95.2 s (Set EV to +6.6) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/33 s (Set EV to -0.9)
Screen photo	[open image]
Luminance	0.03 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–9.07 stops (aim for –2 to –3)
Exposure spread	0.85 stops
Area used for calculation	0.924 x 0.924
Camera settings	Exposure time: 1 ISO: 80 F-number: 3.8 Focal length: 64 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	91 cd/m2
Luminance spread	25 cd/m2 (2 standard deviations)
Exposure value	–3.59 stops (aim for –2 to –3)
Exposure spread	0.4 stops
Area used for calculation	0.924 x 0.924
Camera settings	Exposure time: 1/71 ISO: 80 F-number: 3.8 Focal length: 64 mm (35 mm equivalent) Exposure compensation: -2

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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.