Contrast ratio of Wacom Cintiq 21UX

Black
Contrast ratio	375:1 (edge: 361:1)
Monitor model	Wacom Cintiq 21UX
Submitted	05 Sep 2010 19:36 CEST, by 60.242..
Camera model	Nikon D700
Processing remarks	Note: image file 1: suggested exposure time: 0.3 s (Set EV to -1.8) Note: image file 3: suggested exposure time: 0.3 s (Set EV to -1.8)
Screen photo	[open image]
Luminance	0.26 cd/m2
Luminance spread	0.05 cd/m2 (2 standard deviations)
Exposure value	–0.71 stops (aim for –2 to –3)
Exposure spread	0.26 stops
Area used for calculation	0.694 x 0.782
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.4 Focal length: 50 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	96 cd/m2
Luminance spread	21 cd/m2 (2 standard deviations)
Exposure value	–1.13 stops (aim for –2 to –3)
Exposure spread	0.32 stops
Area used for calculation	0.694 x 0.782
Camera settings	Exposure time: 1/500 ISO: 400 F-number: 1.4 Focal length: 50 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.27 cd/m2
Luminance spread	0.05 cd/m2 (2 standard deviations)
Exposure value	–0.66 stops (aim for –2 to –3)
Exposure spread	0.28 stops
Area used for calculation	0.694 x 0.782
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.4 Focal length: 50 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.