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Contrast ratio results for Samsung LTN154X3-L0A

Contrast ratio 337:1
Monitor model Samsung LTN154X3-L0A
Submitted 31 Dec 2009 18:36 CET, by 88.114.*.*
Camera model Canon DIGITAL IXUS 75
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 0.7 s (Set EV to +1.6)

Black
Screen photo
[open image]
Luminance 0.4 cd/m2
Luminance spread 0.81 cd/m2 (2 standard deviations)
Exposure value –4.06 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1/4   ISO: 400   F-number: 2.8
Focal length: 34.3 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 135 cd/m2
Luminance spread 30 cd/m2 (2 standard deviations)
Exposure value –1.64 stops   (aim for –2 to –3)
Exposure spread 0.33 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1/251   ISO: 400   F-number: 2.8
Focal length: 34.3 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.