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

Contrast ratio results for LG F700P

Contrast ratio 2:1
Monitor model LG F700P
Submitted 03 Apr 2010 14:24 CEST, by 201.35.*.*
Camera model Canon PowerShot A510
Processing remarks

Note: image file 1: suggested exposure time: 0.3 s (Set EV to -1.8)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/7 s (Set EV to +5.8)

Black
Screen photo
[open image]
Luminance 0.86 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –0.75 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 0.5 x 0.5
Camera settings Exposure time: 1   ISO: 400   F-number: 2.6
Focal length: 34.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 1.81 cd/m2
Luminance spread 1.28 cd/m2 (2 standard deviations)
Exposure value –8.33 stops   (aim for –2 to –3)
Exposure spread 1.07 stops
Area used for calculation 0.5 x 0.5
Camera settings Exposure time: 1/403   ISO: 400   F-number: 2.6
Focal length: 34.6 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.