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

Contrast ratio results for Dell UltraSharp U2410

Contrast ratio 1563:1 (edge: 1858:1)
Monitor model Dell UltraSharp U2410
Submitted 03 Mar 2010 00:13 CET, by 145.99.*.*
Camera model Canon EOS 450D
Processing remarks

Warning: image file 1: camera was zoomed out too much.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 2.4 s (Set EV to -0.4)
Warning: image file 2: camera was zoomed out too much.
Warning: image file 3: camera was zoomed out too much.
Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 2.9 s (Set EV to -0.5)

Black
Screen photo
[open image]
Luminance 0.33 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –4.09 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 0.8   ISO: 400   F-number: 4.6
Focal length: 1.2 mm   (35 mm equivalent)
Exposure compensation: -2
White
Screen photo
[open image]
Luminance 519 cd/m2
Luminance spread 26 cd/m2 (2 standard deviations)
Exposure value –2.16 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 1/512   ISO: 400   F-number: 4.6
Focal length: 1.2 mm   (35 mm equivalent)
Exposure compensation: -1
Black at screen edge
Screen photo
[open image]
Luminance 0.28 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –4.02 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 1   ISO: 400   F-number: 4.6
Focal length: 1.2 mm   (35 mm equivalent)
Exposure compensation: -2

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.