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

Contrast ratio results for LG

Contrast ratio 441:1
Monitor model LG
Submitted 01 Aug 2020 18:35 CEST, by 200.163.*.*
Camera model motorola moto x4
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 2.6 s (Set EV to +2.3)
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: 1/170 s (Set EV to -6.5)

Black
Screen photo
[open image]
Luminance 0.12 cd/m2
Luminance spread 0.16 cd/m2 (2 standard deviations)
Exposure value –8.79 stops   (aim for –2 to –3)
Exposure spread 2.52 stops
Area used for calculation 0.528 x 0.594
Camera settings Exposure time: 1/30   ISO: 200   F-number: 2
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: -4
White
Screen photo
[open image]
Luminance 51 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –-0 stops   (aim for –2 to –3)
Exposure spread 0 stops
Area used for calculation 0.528 x 0.556
Camera settings Exposure time: 1/30   ISO: 200   F-number: 2
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: -4
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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.