Contrast ratio results for Dell U2311H

Black
Contrast ratio	178:1
Monitor model	Dell U2311H
Submitted	23 Jul 2015 02:22 CEST, by 195.191..
Camera model	Sony ILCE-6000
Processing remarks	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: 6.7 s (Set EV to +2.7) Warning: image file 2: automatic white balance can cause inaccuracies. Warning: image file 2: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 1/27 s (Set EV to +3.9)
Screen photo	[open image]
Luminance	0.07 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–5.24 stops (aim for –2 to –3)
Exposure spread	0.47 stops
Area used for calculation	0.375 x 0.423
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	12 cd/m2
Luminance spread	6 cd/m2 (2 standard deviations)
Exposure value	–6.41 stops (aim for –2 to –3)
Exposure spread	0.68 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1/400 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.