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

Contrast ratio results for Philips 247E6

Contrast ratio 272:1 (edge: 268:1)
Monitor model Philips 247E6
Submitted 15 Dec 2022 10:49 CET, by 119.12.*.*
Camera model ZTE Blade A51
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 3: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).

Black
Screen photo
[open image]
Luminance 1.36 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –2.41 stops   (aim for –2 to –3)
Exposure spread 0.08 stops
Area used for calculation 0.528 x 0.223
Camera settings Exposure time: 1/5   ISO: 400   F-number: 2.6
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 370 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –0.97 stops   (aim for –2 to –3)
Exposure spread 0.03 stops
Area used for calculation 0.528 x 0.223
Camera settings Exposure time: 1/502   ISO: 400   F-number: 2.6
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 1.38 cd/m2
Luminance spread 0.66 cd/m2 (2 standard deviations)
Exposure value –2.39 stops   (aim for –2 to –3)
Exposure spread 0.7 stops
Area used for calculation 0.528 x 0.704
Camera settings Exposure time: 1/5   ISO: 400   F-number: 2.6
Focal length: 0 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.