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

Contrast ratio results for BenQ PD2700Q

Contrast ratio 1753:1 (edge: 1542:1)
Monitor model BenQ PD2700Q
Submitted 13 Feb 2019 16:43 CET, by 80.182.*.*
Camera model Canon EOS 77D
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.0 s (Set EV to +1.6)
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 3: automatic white balance can cause inaccuracies.
Note: image file 3: suggested exposure time: 2.6 s (Set EV to +1.4)

Black
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.14 cd/m2 (2 standard deviations)
Exposure value –4.08 stops   (aim for –2 to –3)
Exposure spread 1.45 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 271 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –1.93 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1/395   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.18 cd/m2
Luminance spread 0.27 cd/m2 (2 standard deviations)
Exposure value –3.89 stops   (aim for –2 to –3)
Exposure spread 2.91 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
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.