Contrast ratio results

Contrast ratio 1:1
Monitor model
Submitted 13 Nov 2008 17:09 CET, by 86.32.*.*
Camera model Nikon COOLPIX P60
Processing remarks

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: 1/70 s (Set EV to +2.5)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/89 s (Set EV to +2.2)

Black
Screen photo
Luminance 35 cd/m2
Luminance spread 8 cd/m2 (2 standard deviations)
Exposure value –5 stops   (aim for –2 to –3)
Exposure spread 0.33 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1/400   ISO: 400   F-number: 3.6
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 44 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –4.66 stops   (aim for –2 to –3)
Exposure spread 0.29 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1/400   ISO: 400   F-number: 3.6
Focal length: 36 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.