Contrast ratio results for Samsung LC24F396FHUXEN

Black
Contrast ratio	113348:1 (edge: 10498:1)
Monitor model	Samsung LC24F396FHUXEN
Submitted	15 Nov 2019 22:42 CET, by 172.83..
Camera model	TCL 5080X
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 263.4 s (Set EV to +12.1) Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 2: Overexposed. Please decrease the shutter time. Note: image file 2: suggested exposure time: 1/430 s (Set EV to -0.1) Warning: image file 3: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 3: Underexposed. Please increase the shutter time. Note: image file 3: suggested exposure time: 24.4 s (Set EV to +8.1)
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–14.63 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.528 x 0.704
Camera settings	Exposure time: 1/17 ISO: 400 F-number: 2 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	65 cd/m2
Luminance spread	15 cd/m2 (2 standard deviations)
Exposure value	–0.39 stops (aim for –2 to –3)
Exposure spread	0.33 stops
Area used for calculation	0.528 x 0.704
Camera settings	Exposure time: 1/100 ISO: 400 F-number: 2 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 2
Black at screen edge
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–10.57 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.528 x 0.704
Camera settings	Exposure time: 1/11 ISO: 400 F-number: 2 Focal length: 0 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.