Contrast ratio results

Black
Contrast ratio	2022:1
Monitor model
Submitted	05 Jan 2015 15:06 CET, by 31.211..
Camera model	Nikon D7100
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 74.1 s (Set EV to +1.2) Note: image file 2: suggested exposure time: 0.4 s (Set EV to -6.5) Warning: Image F-number settings are not the same.
Screen photo	[open image]
Luminance	0.1 cd/m2
Luminance spread	0.08 cd/m2 (2 standard deviations)
Exposure value	–8.71 stops (aim for –2 to –3)
Exposure spread	1.11 stops
Area used for calculation	0.208 x 0.234
Camera settings	Exposure time: 1 ISO: 100 F-number: 7.1 Focal length: 15 mm (35 mm equivalent) Exposure compensation: -5
White
Screen photo	[open image]
Luminance	208 cd/m2
Luminance spread	10 cd/m2 (2 standard deviations)
Exposure value	–0.99 stops (aim for –2 to –3)
Exposure spread	0.07 stops
Area used for calculation	0.208 x 0.234
Camera settings	Exposure time: 1 ISO: 100 F-number: 22 Focal length: 15 mm (35 mm equivalent) Exposure compensation: -5

{adcode}

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.