Contrast ratio results for LG Flatron W2242T

Black
Contrast ratio	480:1
Monitor model	LG Flatron W2242T
Submitted	09 Aug 2008 03:16 CEST, by 158.195..
Camera model	Canon EOS 20D
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Note: image file 1: suggested exposure time: 2.4 s (Set EV to +1.3) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/200 s (Set EV to +1.0)
Screen photo	[open image]
Luminance	0.19 cd/m2
Luminance spread	0.06 cd/m2 (2 standard deviations)
Exposure value	–3.78 stops (aim for –2 to –3)
Exposure spread	0.47 stops
Area used for calculation	0.39 x 0.439
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 28.1 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	91 cd/m2
Luminance spread	69 cd/m2 (2 standard deviations)
Exposure value	–3.52 stops (aim for –2 to –3)
Exposure spread	1.15 stops
Area used for calculation	0.39 x 0.439
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 3.5 Focal length: 28.1 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.