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

Contrast ratio results for Acer VG252Q

Contrast ratio 7095:1
Monitor model Acer VG252Q
Submitted 30 Nov 2021 17:51 CET, by 93.75.*.*
Camera model Apple iPhone SE
Processing remarks

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: 2.2 s (Set EV to +3.1)
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.13 cd/m2 (2 standard deviations)
Exposure value –5.63 stops   (aim for –2 to –3)
Exposure spread 1.53 stops
Area used for calculation 0.419 x 0.419
Camera settings Exposure time: 1/4   ISO: 250   F-number: 2.2
Focal length: 29 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 950 cd/m2
Luminance spread 97 cd/m2 (2 standard deviations)
Exposure value –0.82 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.419 x 0.419
Camera settings Exposure time: 1/1012   ISO: 250   F-number: 2.2
Focal length: 29 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.