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

Contrast ratio results

Contrast ratio 46146:1
Monitor model
Submitted 18 Nov 2020 05:54 CET, by 78.55.*.*
Camera model Sony NEX-5N
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 5360.7 s (Set EV to +19.7)
Note: image file 2: suggested exposure time: 1/8 s (Set EV to -0.4)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –22.21 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.499 x 0.564
Camera settings Exposure time: 1/160   ISO: 100   F-number: 11
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 157 cd/m2
Luminance spread 11 cd/m2 (2 standard deviations)
Exposure value –1.13 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.499 x 0.564
Camera settings Exposure time: 0.3   ISO: 100   F-number: 11
Focal length: 36 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.