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

Contrast ratio results for MacBook Air M1

Contrast ratio 65163:1
Monitor model MacBook Air M1
Submitted 12 Apr 2025 03:29 CEST, by 104.28.*.*
Camera model Apple iPhone 8
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 100.4 s (Set EV to +5.1)
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: Image F-number settings are not the same.
Warning: Images were taken with different cameras.
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –7.57 stops   (aim for –2 to –3)
Exposure spread 0.51 stops
Area used for calculation 0.528 x 0.297
Camera settings Exposure time: 3   ISO: 400   F-number: 1.4
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 48 cd/m2
Luminance spread 20 cd/m2 (2 standard deviations)
Exposure value –2.54 stops   (aim for –2 to –3)
Exposure spread 0.6 stops
Area used for calculation 0.539 x 0.303
Camera settings Exposure time: 1/403   ISO: 400   F-number: 1.8
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.