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

Contrast ratio of 13 inch MacBook Pro LCD display

Contrast ratio 304:1
Monitor model 13 inch MacBook Pro LCD display
Submitted 29 Aug 2010 20:34 CEST, by 92.234.*.*
Camera model Kodak EASYSHARE C913 DIGITAL CAMERA
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: 1.2 s (Set EV to +3.3)
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 0.23 cd/m2
Luminance spread 0.18 cd/m2 (2 standard deviations)
Exposure value –3.79 stops   (aim for –2 to –3)
Exposure spread 1.25 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2.7
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 2
White
Screen photo
[open image]
Luminance 68 cd/m2
Luminance spread 52 cd/m2 (2 standard deviations)
Exposure value –2.18 stops   (aim for –2 to –3)
Exposure spread 1.16 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1/199   ISO: 400   F-number: 2.7
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 0
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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.