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

Contrast ratio results

Contrast ratio 655:1
Monitor model
Submitted 07 Feb 2019 18:04 CET, by 89.64.*.*
Camera model Nikon D5300
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.

Black
Screen photo
[open image]
Luminance 0.3 cd/m2
Luminance spread 0.17 cd/m2 (2 standard deviations)
Exposure value –1.49 stops   (aim for –2 to –3)
Exposure spread 0.84 stops
Area used for calculation 0.556 x 0.625
Camera settings Exposure time: 8   ISO: 100   F-number: 2.8
Focal length: 40 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 196 cd/m2
Luminance spread 143 cd/m2 (2 standard deviations)
Exposure value –1.77 stops   (aim for –2 to –3)
Exposure spread 1.11 stops
Area used for calculation 0.556 x 0.625
Camera settings Exposure time: 1/100   ISO: 100   F-number: 2.8
Focal length: 40 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.