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

Contrast ratio results

Contrast ratio 102:1
Monitor model
Submitted 06 Sep 2020 22:32 CEST, by 77.185.*.*
Camera model Panasonic DMC-FZ2000
Processing remarks

Warning: image file 3: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 1/120 s (Set EV to +2.4)
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
[open image]
Luminance 0.96 cd/m2
Luminance spread 1.46 cd/m2 (2 standard deviations)
Exposure value –3.39 stops   (aim for –2 to –3)
Exposure spread 2.88 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1/6   ISO: 400   F-number: 2.8
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 97 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –2.78 stops   (aim for –2 to –3)
Exposure spread 0.52 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 35 cd/m2
Luminance spread 72 cd/m2 (2 standard deviations)
Exposure value –4.94 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1/640   ISO: 400   F-number: 2.8
Focal length: 24 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.