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

Contrast ratio of Samsung P2770HD

Contrast ratio 358:1
Monitor model Samsung P2770HD
Submitted 14 Jun 2012 06:12 CEST, by 76.126.*.*
Camera model Olympus C3000Z
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Note: image file 1: suggested exposure time: 5.1 s (Set EV to -1.7)

Black
Screen photo
[open image]
Luminance 0.23 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –0.84 stops   (aim for –2 to –3)
Exposure spread 0.42 stops
Area used for calculation 0.467 x 0.467
Camera settings Exposure time: 16   ISO: 100   F-number: 2.8
Focal length: 32.3 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 84 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –2 stops   (aim for –2 to –3)
Exposure spread 0.62 stops
Area used for calculation 0.467 x 0.467
Camera settings Exposure time: 1/50   ISO: 100   F-number: 2.8
Focal length: 32.3 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.