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

Contrast ratio results for Philips 275E

Contrast ratio 1820:1
Monitor model Philips 275E
Submitted 02 Jan 2020 18:51 CET, by 91.225.*.*
Camera model Nikon D3100
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.3 s (Set EV to +3.7)

Black
Screen photo
[open image]
Luminance 0.09 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –6.22 stops   (aim for –2 to –3)
Exposure spread 0.51 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/4   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 164 cd/m2
Luminance spread 34 cd/m2 (2 standard deviations)
Exposure value –2.03 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 75 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.