Contrast ratio results

Black
Contrast ratio	208:1
Monitor model
Submitted	08 Mar 2020 09:06 CET, by 61.9..
Camera model	Sony NEX-5T
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/220 s (Set EV to -1.4)
Screen photo	[open image]
Luminance	0.63 cd/m2
Luminance spread	0.36 cd/m2 (2 standard deviations)
Exposure value	–2.75 stops (aim for –2 to –3)
Exposure spread	0.85 stops
Area used for calculation	0.451 x 0.601
Camera settings	Exposure time: 0.8 ISO: 400 F-number: 4 Focal length: 34 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	132 cd/m2
Luminance spread	24 cd/m2 (2 standard deviations)
Exposure value	–1.05 stops (aim for –2 to –3)
Exposure spread	0.26 stops
Area used for calculation	0.451 x 0.601
Camera settings	Exposure time: 1/80 ISO: 400 F-number: 4 Focal length: 34 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.