Contrast ratio results for Lenovo Y27gq-25

Contrast ratio 2271:1
Monitor model Lenovo Y27gq-25
Submitted 29 Nov 2020 17:10 CET, by 85.131.*.*
Camera model OnePlus A3003
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.5 s (Set EV to +1.8)

Black
Screen photo
Luminance 0.04 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –4.3 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1   ISO: 400   F-number: 2
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 98 cd/m2
Luminance spread 12 cd/m2 (2 standard deviations)
Exposure value –1.8 stops   (aim for –2 to –3)
Exposure spread 0.18 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
{adcode}

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.