| Contrast ratio | 884:1 |
|---|---|
| Monitor model | Catleap 0270 27" |
| Submitted | 12 Apr 2013 04:48 CEST, by 76.182.*.* |
| Camera model | Canon EOS D60 |
| Processing remarks | Note: image file 1: suggested exposure time: 10.4 s (Set EV to +1.4) |
| Black | |
| Screen photo |
|
| Luminance | 0.06 cd/m2 |
| Luminance spread | 0.02 cd/m2 (2 standard deviations) |
| Exposure value | –3.88 stops (aim for –2 to –3) |
| Exposure spread | 0.51 stops |
| Area used for calculation | 0.603 x 0.678 |
| Camera settings | Exposure time: 4 ISO: 400 F-number: 4 Focal length: 43.4 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 51 cd/m2 |
| Luminance spread | 10 cd/m2 (2 standard deviations) |
| Exposure value | –3.05 stops (aim for –2 to –3) |
| Exposure spread | 0.29 stops |
| Area used for calculation | 0.603 x 0.678 |
| Camera settings | Exposure time: 1/125 ISO: 400 F-number: 4 Focal length: 43.4 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr025/06462a.jpg){kind=link}
![[open image]](upload/cr025/06462b.jpg){kind=link}
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.