Contrast ratio results for asus vw246

Black
Contrast ratio	976:1
Monitor model	asus vw246
Submitted	18 Sep 2017 04:05 CEST, by 172.58..
Camera model	Canon EOS DIGITAL REBEL XTi
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 8.0 s (Set EV to +4.0) Note: image file 2: suggested exposure time: 1/120 s (Set EV to +1.4)
Screen photo	[open image]
Luminance	0.08 cd/m2
Luminance spread	0.09 cd/m2 (2 standard deviations)
Exposure value	–6.51 stops (aim for –2 to –3)
Exposure spread	1.92 stops
Area used for calculation	0.369 x 0.416
Camera settings	Exposure time: 0.5 ISO: 400 F-number: 4 Focal length: 26.6 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	73 cd/m2
Luminance spread	27 cd/m2 (2 standard deviations)
Exposure value	–3.9 stops (aim for –2 to –3)
Exposure spread	0.54 stops
Area used for calculation	0.369 x 0.416
Camera settings	Exposure time: 1/320 ISO: 400 F-number: 4 Focal length: 26.6 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.