Contrast ratio results

Black
Contrast ratio	542:1 (edge: 412:1)
Monitor model
Submitted	12 Nov 2024 22:28 CET, by 212.51..
Camera model	Panasonic DC-S5M2
Processing remarks	Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Screen photo	[open image]
Luminance	0.3 cd/m2
Luminance spread	0.12 cd/m2 (2 standard deviations)
Exposure value	–2.27 stops (aim for –2 to –3)
Exposure spread	0.56 stops
Area used for calculation	0.25 x 0.281
Camera settings	Exposure time: 0.3 ISO: 640 F-number: 1.8 Focal length: 18 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	163 cd/m2
Luminance spread	15 cd/m2 (2 standard deviations)
Exposure value	–1.79 stops (aim for –2 to –3)
Exposure spread	0.13 stops
Area used for calculation	0.25 x 0.281
Camera settings	Exposure time: 1/1300 ISO: 640 F-number: 1.8 Focal length: 18 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.39 cd/m2
Luminance spread	0.13 cd/m2 (2 standard deviations)
Exposure value	–1.87 stops (aim for –2 to –3)
Exposure spread	0.49 stops
Area used for calculation	0.25 x 0.281
Camera settings	Exposure time: 0.3 ISO: 640 F-number: 1.8 Focal length: 18 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.