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

Contrast ratio results

Contrast ratio 5936:1
Monitor model
Submitted 23 Jun 2022 03:01 CEST, by 77.78.*.*
Camera model Canon PowerShot SX160 IS
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 77.8 s (Set EV to +3.0)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.03 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –5.47 stops   (aim for –2 to –3)
Exposure spread 1.71 stops
Area used for calculation 0.472 x 0.472
Camera settings Exposure time: 9.9   ISO: 400   F-number: 8
Focal length: 32.7 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 185 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –2.55 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.472 x 0.472
Camera settings Exposure time: 1/79   ISO: 400   F-number: 8
Focal length: 32.7 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.