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

Contrast ratio results for Dell

Contrast ratio 40:1
Monitor model Dell
Submitted 02 Jul 2020 11:54 CEST, by 80.219.*.*
Camera model Nikon D5600
Processing remarks

Note: image file 1: suggested exposure time: 1/160 s (Set EV to +1.3)
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/3 s (Set EV to +1.7)

Black
Screen photo
[open image]
Luminance 2.37 cd/m2
Luminance spread 2.37 cd/m2 (2 standard deviations)
Exposure value –4.23 stops   (aim for –2 to –3)
Exposure spread 1.59 stops
Area used for calculation 0.375 x 0.422
Camera settings Exposure time: 1/13   ISO: 400   F-number: 4
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 96 cd/m2
Luminance spread 27 cd/m2 (2 standard deviations)
Exposure value –3.84 stops   (aim for –2 to –3)
Exposure spread 0.41 stops
Area used for calculation 0.375 x 0.422
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4
Focal length: 27 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.