Contrast ratio results

Black
Contrast ratio	5104:1
Monitor model
Submitted	16 Apr 2022 10:14 CEST, by 58.187..
Camera model	Nikon D750
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 5.9 s (Set EV to +9.9) Warning: image file 2: Overexposed. Please decrease the shutter time.
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	1.13 cd/m2 (2 standard deviations)
Exposure value	–12.38 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.695 x 0.78
Camera settings	Exposure time: 1/160 ISO: 400 F-number: 1.4 Focal length: 50 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	64 cd/m2
Luminance spread	4 cd/m2 (2 standard deviations)
Exposure value	–0.07 stops (aim for –2 to –3)
Exposure spread	0.08 stops
Area used for calculation	0.695 x 0.78
Camera settings	Exposure time: 1/160 ISO: 400 F-number: 1.4 Focal length: 50 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.