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

Contrast ratio results

Contrast ratio 943:1
Monitor model
Submitted 03 Jul 2019 02:59 CEST, by 188.238.*.*
Camera model Nikon D7000
Processing remarks

Note: image file 1: suggested exposure time: 2.8 s (Set EV to +5.5)

Black
Screen photo
[open image]
Luminance 0.31 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –0.98 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.998 x 1
Camera settings Exposure time: 8   ISO: 400   F-number: 4.8
Focal length: 72 mm   (35 mm equivalent)
Exposure compensation: 7
White
Screen photo
[open image]
Luminance 293 cd/m2
Luminance spread 138 cd/m2 (2 standard deviations)
Exposure value –2.75 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 0.998 x 1
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4.8
Focal length: 72 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.