Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results for E207WFP

Contrast ratio 43725:1
Monitor model E207WFP
Submitted 30 Jun 2008 19:32 CEST, by 75.27.*.*
Camera model SANYO Electric Co.Ltd. CG6
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 415.9 s (Set EV to +9.7)
image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
[open image]
Luminance 0.01 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –12.2 stops   (aim for –2 to –3)
Exposure spread 2.84 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 0.5   ISO: 50   F-number: 3.5
Focal length: 38 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 389 cd/m2
Luminance spread 64 cd/m2 (2 standard deviations)
Exposure value –1.54 stops   (aim for –2 to –3)
Exposure spread 0.24 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1/54   ISO: 50   F-number: 3.5
Focal length: 38 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 171 cd/m2
Luminance spread 385 cd/m2 (2 standard deviations)
Exposure value –2.1 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1/35   ISO: 50   F-number: 3.5
Focal length: 38 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.