Contrast ratio results for Samsung S20B300

Black
Contrast ratio	1001:1
Monitor model	Samsung S20B300
Submitted	18 Jan 2014 17:51 CET, by 179.208..
Camera model	Canon EOS REBEL SL1
Processing remarks	Warning: image file 1: camera was zoomed in too much. Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 6.5 s (Set EV to +4.7) Warning: image file 2: camera was zoomed in too much. Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/150 s (Set EV to +1.4)
Screen photo	[open image]
Luminance	0.38 cd/m2
Luminance spread	0.05 cd/m2 (2 standard deviations)
Exposure value	–7.2 stops (aim for –2 to –3)
Exposure spread	0.2 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/4 ISO: 200 F-number: 5.7 Focal length: 87.2 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	379 cd/m2
Luminance spread	49 cd/m2 (2 standard deviations)
Exposure value	–3.86 stops (aim for –2 to –3)
Exposure spread	0.19 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/395 ISO: 200 F-number: 5.7 Focal length: 87.2 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.