Contrast ratio results

Black
Contrast ratio	16295:1
Monitor model
Submitted	23 Oct 2019 09:08 CEST, by 93.35..
Camera model	Olympus E-M10MarkII
Processing remarks	Warning: using the flash makes no sense. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 41.7 s (Set EV to +4.3) Warning: using the flash makes no sense. Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 2: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 1/390 s (Set EV to -1.6)
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–11.79 stops (aim for –2 to –3)
Exposure spread	1.18 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/15 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -5
White
Screen photo	[open image]
Luminance	181 cd/m2
Luminance spread	17 cd/m2 (2 standard deviations)
Exposure value	–5.86 stops (aim for –2 to –3)
Exposure spread	0.14 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/4000 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -5

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.