Contrast ratio | 509:1 (edge: 577:1) |
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Monitor model | |
Submitted | 25 Jan 2010 21:40 CET, by 78.53.*.* |
Camera model | Sony DSLR-A700 |
Processing remarks |
|
Black | |
Screen photo |
|
Luminance | 0.15 cd/m2 |
Luminance spread | 0.05 cd/m2 (2 standard deviations) |
Exposure value | –2.53 stops (aim for –2 to –3) |
Exposure spread | 0.44 stops |
Area used for calculation | 0.375 x 0.421 |
Camera settings | Exposure time: 6 ISO: 400 F-number: 5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: -2.3 |
White | |
Screen photo |
|
Luminance | 79 cd/m2 |
Luminance spread | 10 cd/m2 (2 standard deviations) |
Exposure value | –3.44 stops (aim for –2 to –3) |
Exposure spread | 0.19 stops |
Area used for calculation | 0.375 x 0.421 |
Camera settings | Exposure time: 1/160 ISO: 400 F-number: 5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: -2.3 |
Black at screen edge | |
Screen photo |
|
Luminance | 0.14 cd/m2 |
Luminance spread | 0.04 cd/m2 (2 standard deviations) |
Exposure value | –2.71 stops (aim for –2 to –3) |
Exposure spread | 0.4 stops |
Area used for calculation | 0.375 x 0.421 |
Camera settings | Exposure time: 6 ISO: 400 F-number: 5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: -2.3 |
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.