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

Contrast ratio results

Contrast ratio 1:1
Monitor model
Submitted 13 Jan 2024 07:29 CET, by 85.231.*.*
Camera model Sony XQ-BC52
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/260 s (Set EV to -2.1)

Black
Screen photo
[open image]
Luminance 56 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –0.4 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.528 x 0.721
Camera settings Exposure time: 1/60   ISO: 200   F-number: 1.7
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 59 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –2.39 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.528 x 0.709
Camera settings Exposure time: 1/249   ISO: 200   F-number: 1.7
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.