Contrast ratio results for Sony CPD-G520P FD Trinitron(85Hz)

Black
Contrast ratio	286:1
Monitor model	Sony CPD-G520P FD Trinitron(85Hz)
Submitted	01 Oct 2008 12:38 CEST, by 12.214..
Camera model	Sony DSLR-A100
Processing remarks	Note: image file 1: suggested exposure time: 1.6 s (Set EV to -1.7) Warning: Image ISO settings are not the same. Warning: Image F-number settings are not the same. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	0.38 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–0.81 stops (aim for –2 to –3)
Exposure spread	0.07 stops
Area used for calculation	0.741 x 0.83
Camera settings	Exposure time: 5 ISO: 800 F-number: 5.6 Focal length: 53.3 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	109 cd/m2
Luminance spread	10 cd/m2 (2 standard deviations)
Exposure value	–2.72 stops (aim for –2 to –3)
Exposure spread	0.14 stops
Area used for calculation	0.592 x 0.664
Camera settings	Exposure time: 1 ISO: 100 F-number: 29 Focal length: 42.6 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.