Contrast ratio results for Samsung syncmaster 2494

Black
Contrast ratio	1701:1
Monitor model	Samsung syncmaster 2494
Submitted	18 Jun 2016 16:20 CEST, by 141.70..
Camera model	Sony NEX-5N
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 11.8 s (Set EV to +3.6) Note: image file 2: suggested exposure time: 1/140 s (Set EV to +1.5)
Screen photo	[open image]
Luminance	0.04 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–6.06 stops (aim for –2 to –3)
Exposure spread	0.5 stops
Area used for calculation	0.358 x 0.478
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	67 cd/m2
Luminance spread	21 cd/m2 (2 standard deviations)
Exposure value	–3.98 stops (aim for –2 to –3)
Exposure spread	0.46 stops
Area used for calculation	0.358 x 0.478
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 3.5 Focal length: 27 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.