Contrast ratio results

Black
Contrast ratio	602:1 (edge: 437:1)
Monitor model
Submitted	25 Oct 2012 11:18 CEST, by 207.229..
Camera model	Kodak EASYSHARE Touch Camera M577
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 4.0 s (Set EV to +3.0) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/150 s (Set EV to -1.9) Warning: image file 3: automatic white balance can cause inaccuracies. Warning: image file 3: Underexposed. Please increase the shutter time. Note: image file 3: suggested exposure time: 2.9 s (Set EV to +2.6)
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–5.51 stops (aim for –2 to –3)
Exposure spread	2 stops
Area used for calculation	0.388 x 0.439
Camera settings	Exposure time: 0.5 ISO: 7230 F-number: 3.9 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	4.74 cd/m2
Luminance spread	0.6 cd/m2 (2 standard deviations)
Exposure value	–0.6 stops (aim for –2 to –3)
Exposure spread	0.18 stops
Area used for calculation	0.388 x 0.439
Camera settings	Exposure time: 1/40 ISO: 7230 F-number: 3.9 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–5.05 stops (aim for –2 to –3)
Exposure spread	2.07 stops
Area used for calculation	0.388 x 0.439
Camera settings	Exposure time: 0.5 ISO: 7230 F-number: 3.9 Focal length: 28 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.