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

Contrast ratio results

Contrast ratio 5497:1
Monitor model
Submitted 27 Nov 2020 14:13 CET, by 94.4.*.*
Camera model Razer Phone 2
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 1.7 s (Set EV to +4.9)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Note: image file 2: suggested exposure time: 1/360 s (Set EV to -1.6)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –7.35 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/17   ISO: 1550   F-number: 1.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 102 cd/m2
Luminance spread 10 cd/m2 (2 standard deviations)
Exposure value –0.9 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/120   ISO: 174   F-number: 1.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
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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.