| Contrast ratio | 313:1 | 
|---|---|
| Monitor model | LG Flatron 1750SQ | 
| Submitted | 26 Oct 2011 22:21 CEST, by 94.62.*.* | 
| Camera model | Canon EOS 40D | 
| Processing remarks | 
 | 
| Black | |
| Screen photo |  | 
| Luminance | 0.2 cd/m2 | 
| Luminance spread | 0.03 cd/m2 (2 standard deviations) | 
| Exposure value | –2.09 stops (aim for –2 to –3) | 
| Exposure spread | 0.25 stops | 
| Area used for calculation | 0.54 x 0.608 | 
| Camera settings | Exposure time: 8   ISO: 100   F-number: 2.8 Focal length: 38.9 mm (35 mm equivalent) Exposure compensation: 1 | 
| White | |
| Screen photo |  | 
| Luminance | 62 cd/m2 | 
| Luminance spread | 18 cd/m2 (2 standard deviations) | 
| Exposure value | –3.18 stops (aim for –2 to –3) | 
| Exposure spread | 0.43 stops | 
| Area used for calculation | 0.54 x 0.608 | 
| Camera settings | Exposure time: 1/83   ISO: 100   F-number: 2.8 Focal length: 38.9 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.