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

Contrast ratio results for Dell S3220DGF

Contrast ratio 39946:1 (edge: 79586:1)
Monitor model Dell S3220DGF
Submitted 16 Feb 2020 06:38 CET, by 47.205.*.*
Camera model TCL 5032W
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 69.6 s (Set EV to +15.1)
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 2: Overexposed. Please decrease the shutter time.
Warning: image file 3: automatic white balance can cause inaccuracies.
Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 138.6 s (Set EV to +15.1)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –17.59 stops   (aim for –2 to –3)
Exposure spread 0.16 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/500   ISO: 800   F-number: 1.8
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 35 cd/m2
Luminance spread 5 cd/m2 (2 standard deviations)
Exposure value –0.3 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/125   ISO: 800   F-number: 1.8
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –17.58 stops   (aim for –2 to –3)
Exposure spread 0.37 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/250   ISO: 800   F-number: 1.8
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
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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.