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

Contrast ratio results

Contrast ratio 636:1
Monitor model
Submitted 22 Mar 2010 18:38 CET, by 92.3.*.*
Camera model Kodak EASYSHARE M1033 DIGITAL CAMERA
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 1/9 s (Set EV to +2.8)
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Note: image file 2: suggested exposure time: 1/370 s (Set EV to -1.8)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.42 cd/m2
Luminance spread 3.21 cd/m2 (2 standard deviations)
Exposure value –5.29 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.485 x 0.548
Camera settings Exposure time: 1/64   ISO: 3   F-number: 3.1
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 267 cd/m2
Luminance spread 115 cd/m2 (2 standard deviations)
Exposure value –0.65 stops   (aim for –2 to –3)
Exposure spread 0.63 stops
Area used for calculation 0.485 x 0.548
Camera settings Exposure time: 1/102   ISO: 200   F-number: 3.1
Focal length: 35 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.