Contrast ratio results for Acer S243HL

Black
Contrast ratio	1617:1
Monitor model	Acer S243HL
Submitted	15 Jun 2022 02:09 CEST, by 176.36..
Camera model	Nikon D5000
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: 5.7 s (Set EV to -4.5) Warning: image file 2: automatic white balance can cause inaccuracies.
Screen photo	[open image]
Luminance	0.08 cd/m2
Luminance spread	0.04 cd/m2 (2 standard deviations)
Exposure value	–5.01 stops (aim for –2 to –3)
Exposure spread	0.67 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: -7
White
Screen photo	[open image]
Luminance	132 cd/m2
Luminance spread	24 cd/m2 (2 standard deviations)
Exposure value	–2.67 stops (aim for –2 to –3)
Exposure spread	0.26 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1/320 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: -4

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.