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

Contrast ratio results for Odyssey G7 32

Contrast ratio 6378:1
Monitor model Odyssey G7 32
Submitted 20 Nov 2020 20:37 CET, by 31.167.*.*
Camera model Apple iPhone 11
Processing remarks

Note: image file 1: suggested exposure time: 1.1 s (Set EV to +1.3)
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.06 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –3.58 stops   (aim for –2 to –3)
Exposure spread 1.97 stops
Area used for calculation 0.376 x 0.376
Camera settings Exposure time: 0.5   ISO: 800   F-number: 1.8
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0.205
White
Screen photo
[open image]
Luminance 369 cd/m2
Luminance spread 49 cd/m2 (2 standard deviations)
Exposure value –0.6 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.376 x 0.376
Camera settings Exposure time: 1/644   ISO: 320   F-number: 1.8
Focal length: 26 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.