Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results

Contrast ratio 1097:1
Monitor model
Submitted 29 Oct 2021 15:13 CEST, by 89.95.*.*
Camera model Nikon D7200
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 2: camera was zoomed in too much.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
[open image]
Luminance 0.48 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –2.78 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 1 x 0.75
Camera settings Exposure time: 1   ISO: 640   F-number: 5
Focal length: 210 mm   (35 mm equivalent)
Exposure compensation: 1
White
Screen photo
[open image]
Luminance 532 cd/m2
Luminance spread 26 cd/m2 (2 standard deviations)
Exposure value –2.65 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 1 x 0.75
Camera settings Exposure time: 1/1000   ISO: 640   F-number: 5
Focal length: 210 mm   (35 mm equivalent)
Exposure compensation: 1

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.