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

Contrast ratio results for Samsung 940t briigt 15 contrast 70

Contrast ratio 204:1
Monitor model Samsung 940t briigt 15 contrast 70
Submitted 06 May 2017 08:00 CEST, by 82.209.*.*
Camera model Nikon COOLPIX L21
Processing remarks

image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.22 cd/m2
Luminance spread 0.22 cd/m2 (2 standard deviations)
Exposure value –1.89 stops   (aim for –2 to –3)
Exposure spread 1.55 stops
Area used for calculation 0.592 x 0.592
Camera settings Exposure time: 1   ISO: 1000   F-number: 3.1
Focal length: 41 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 45 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –1.77 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.592 x 0.592
Camera settings Exposure time: 1/30   ISO: 160   F-number: 3.1
Focal length: 41 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.