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

Contrast ratio results for Aoc e2795Vh (TN)

Contrast ratio 681:1
Monitor model Aoc e2795Vh (TN)
Submitted 24 Sep 2012 08:26 CEST, by 91.153.*.*
Camera model Pentax K10D
Processing remarks

Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/340 s (Set EV to -2.1)
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: Overexposed. Please decrease the shutter time.
Note: image file 3: suggested exposure time: 1/110 s (Set EV to -1.5)
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –2.84 stops   (aim for –2 to –3)
Exposure spread 0.57 stops
Area used for calculation 0.542 x 0.609
Camera settings Exposure time: 1.6   ISO: 400   F-number: 2.8
Focal length: 39 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 100 cd/m2
Luminance spread 20 cd/m2 (2 standard deviations)
Exposure value –0.42 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.542 x 0.609
Camera settings Exposure time: 1/80   ISO: 400   F-number: 2.8
Focal length: 39 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 33 cd/m2
Luminance spread 66 cd/m2 (2 standard deviations)
Exposure value –1.02 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.542 x 0.609
Camera settings Exposure time: 1/40   ISO: 400   F-number: 2.8
Focal length: 39 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.