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

Contrast ratio results for Dell 3007WFPt

Contrast ratio 899:1
Monitor model Dell 3007WFPt
Submitted 12 Sep 2016 03:21 CEST, by 108.181.*.*
Camera model Canon PowerShot SX400 IS
Processing remarks

Note: image file 1: suggested exposure time: 1.4 s (Set EV to +1.2)
Warning: Image F-number settings are not the same.

Black
Screen photo
[open image]
Luminance 0.32 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –3.7 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.35 x 0.35
Camera settings Exposure time: 0.6   ISO: 400   F-number: 3.4
Focal length: 24.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 284 cd/m2
Luminance spread 17 cd/m2 (2 standard deviations)
Exposure value –1.6 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 0.35 x 0.35
Camera settings Exposure time: 1/251   ISO: 400   F-number: 4
Focal length: 24.2 mm   (35 mm equivalent)
Exposure compensation: 0
{adcode}

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.