Contrast ratio results

Black
Contrast ratio	3981:1
Monitor model
Submitted	25 Jul 2018 14:25 CEST, by 86.22..
Camera model	Canon EOS 60D
Processing remarks	Warning: image file 1: camera was zoomed in too much. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 7.5 s (Set EV to +10.3) Warning: image file 2: camera was zoomed in too much.
Screen photo	[open image]
Luminance	0.06 cd/m2
Luminance spread	0.13 cd/m2 (2 standard deviations)
Exposure value	–12.78 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/166 ISO: 800 F-number: 5 Focal length: 272 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	251 cd/m2
Luminance spread	14 cd/m2 (2 standard deviations)
Exposure value	–0.82 stops (aim for –2 to –3)
Exposure spread	0.08 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/166 ISO: 800 F-number: 5 Focal length: 272 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.