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

Contrast ratio results for Acer Nitro VG271UP

Contrast ratio 655:1 (edge: 407:1)
Monitor model Acer Nitro VG271UP
Submitted 04 May 2020 02:51 CEST, by 158.39.*.*
Camera model Sony J9210
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.
Warning: image file 3: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).

Black
Screen photo
[open image]
Luminance 0.29 cd/m2
Luminance spread 0.2 cd/m2 (2 standard deviations)
Exposure value –2.91 stops   (aim for –2 to –3)
Exposure spread 1.04 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/4   ISO: 400   F-number: 1.6
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 191 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –0.51 stops   (aim for –2 to –3)
Exposure spread 0.03 stops
Area used for calculation 0.528 x 0.396
Camera settings Exposure time: 1/498   ISO: 400   F-number: 1.6
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: -2
Black at screen edge
Screen photo
[open image]
Luminance 0.47 cd/m2
Luminance spread 0.69 cd/m2 (2 standard deviations)
Exposure value –2.22 stops   (aim for –2 to –3)
Exposure spread 2.7 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/4   ISO: 400   F-number: 1.6
Focal length: 0 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.