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

Contrast ratio of On-Off Contrast: Epson 9200 with curtain

Contrast ratio 1912:1
Monitor model On-Off Contrast: Epson 9200 with curtain
Submitted 31 Jan 2015 11:27 CET, by 77.9.*.*
Camera model Panasonic DMC-FZ18
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.03 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –1.69 stops   (aim for –2 to –3)
Exposure spread 0.16 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 5   ISO: 1600   F-number: 2.8
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 50 cd/m2
Luminance spread 6 cd/m2 (2 standard deviations)
Exposure value –1.43 stops   (aim for –2 to –3)
Exposure spread 0.18 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/320   ISO: 1600   F-number: 2.8
Focal length: 28 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.