Contrast ratio | 8716:1 (edge: 5931:1) |
---|---|
Monitor model | |
Submitted | 25 Jan 2010 20:40 CET, by 78.53.*.* |
Camera model | Sony DSLR-A700 |
Processing remarks | Warning: image file 1: Underexposed. Please increase the shutter time. |
Black | |
Screen photo |
|
Luminance | 0.01 cd/m2 |
Luminance spread | 0.01 cd/m2 (2 standard deviations) |
Exposure value | –8.62 stops (aim for –2 to –3) |
Exposure spread | 1.1 stops |
Area used for calculation | 0.459 x 0.514 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 4.5 Focal length: 33 mm (35 mm equivalent) Exposure compensation: -1 |
White | |
Screen photo |
|
Luminance | 96 cd/m2 |
Luminance spread | 11 cd/m2 (2 standard deviations) |
Exposure value | –2.17 stops (aim for –2 to –3) |
Exposure spread | 0.16 stops |
Area used for calculation | 0.459 x 0.514 |
Camera settings | Exposure time: 1/100 ISO: 400 F-number: 4.5 Focal length: 33 mm (35 mm equivalent) Exposure compensation: -1 |
Black at screen edge | |
Screen photo |
|
Luminance | 0.02 cd/m2 |
Luminance spread | 0.01 cd/m2 (2 standard deviations) |
Exposure value | –8.06 stops (aim for –2 to –3) |
Exposure spread | 1.28 stops |
Area used for calculation | 0.459 x 0.514 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 4.5 Focal length: 33 mm (35 mm equivalent) Exposure compensation: -1 |
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.