Contrast ratio results for hp 2025

Black
Contrast ratio	3:1 (edge: 28:1)
Monitor model	hp 2025
Submitted	01 Jan 2018 22:53 CET, by 146.120..
Camera model	Sony DSC-S730
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 3: automatic white balance can cause inaccuracies. image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: Image ISO settings are not the same. Warning: Image F-number settings are not the same. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	587 cd/m2
Luminance spread	1127 cd/m2 (2 standard deviations)
Exposure value	–1.87 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.507 x 0.507
Camera settings	Exposure time: 1/320 ISO: 100 F-number: 2.8 Focal length: 35.1 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	1547 cd/m2
Luminance spread	2859 cd/m2 (2 standard deviations)
Exposure value	–2.12 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.913 x 0.913
Camera settings	Exposure time: 1/160 ISO: 100 F-number: 7 Focal length: 63.2 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	55 cd/m2
Luminance spread	39 cd/m2 (2 standard deviations)
Exposure value	–1.96 stops (aim for –2 to –3)
Exposure spread	1.07 stops
Area used for calculation	0.507 x 0.507
Camera settings	Exposure time: 1/40 ISO: 125 F-number: 2.8 Focal length: 35.1 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.