Contrast ratio results for 3dsxl

Black
Contrast ratio	22275:1
Monitor model	3dsxl
Submitted	23 Jan 2013 15:34 CET, by 66.94..
Camera model	SAMSUNG ST500 / SAMSUNG ST510 / VLUU ST5
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 467.7 s (Set EV to +8.9) Note: image file 2: suggested exposure time: 1/48 s (Set EV to -1.2)
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–11.37 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.39 x 0.39
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	22 cd/m2
Luminance spread	5 cd/m2 (2 standard deviations)
Exposure value	–1.32 stops (aim for –2 to –3)
Exposure spread	0.34 stops
Area used for calculation	0.39 x 0.39
Camera settings	Exposure time: 1/21 ISO: 400 F-number: 3.5 Focal length: 27 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.