Contrast ratio results for samsung sync master 940 n

Black
Contrast ratio	1:1
Monitor model	samsung sync master 940 n
Submitted	14 Feb 2012 01:11 CET, by 93.137..
Camera model	Sony DSLR-A350
Processing remarks	Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 1: automatic white balance can cause inaccuracies. image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 3: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 3: automatic white balance can cause inaccuracies. image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Note: image file 3: suggested exposure time: 1/300 s (Set EV to +1.8) Warning: Image ISO settings are not the same. Warning: Image focal lengths/zoom levels are not the same. Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?
Screen photo	[open image]
Luminance	222 cd/m2
Luminance spread	296 cd/m2 (2 standard deviations)
Exposure value	–1.91 stops (aim for –2 to –3)
Exposure spread	2.31 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/1000 ISO: 800 F-number: 2.8 Focal length: 75 mm (35 mm equivalent) Exposure compensation: 0.7
White
Screen photo	[open image]
Luminance	226 cd/m2
Luminance spread	423 cd/m2 (2 standard deviations)
Exposure value	–1.89 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.5 x 0.562
Camera settings	Exposure time: 1/250 ISO: 200 F-number: 2.8 Focal length: 36 mm (35 mm equivalent) Exposure compensation: 0.7
Black at screen edge
Screen photo	[open image]
Luminance	175 cd/m2
Luminance spread	539 cd/m2 (2 standard deviations)
Exposure value	–3.62 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.583 x 0.656
Camera settings	Exposure time: 1/640 ISO: 200 F-number: 2.8 Focal length: 42 mm (35 mm equivalent) Exposure compensation: 0.7

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.