I'm starting this thread with a video I made to show an aspect of contrast ratio with front projectors, but figured others might be interested in adding their own videos or pictures to demonstrate other things related to contrast ratio.
In the past there have been some good threads here (IMO) about contrast ratio with graphs and analysis, such as this one by stanger89:
http://www.avsforum.com/forum/24-di...s-apl-study-adjunct-avs-contrast-project.html
I decided to make a video to try to demonstrate something I have been showing in person for a long time. It probably works better in person, but it seems like it works okay in video form too.
I get the impression that there are still people in the industry who believe that ANSI CR tells us the black floor for a system and this video is related to that. In person I try to show people that the black level they are getting when the ANSI checkerboard is displayed with a projector would not generally make a good black floor for the system, even though it can look dark while that checkerboard is displayed.
I posted the video to youtube, since that seemed like a good way to make it easy to access:
If you can't hear the audio, basically what I did was show an ANSI checkerboard, then covered all of image from the projector except for the center of one of the "black" rectangles, then switched the display to an all black pattern (still blocking most of the screen), then took the black velvet board away to show the whole black image (which the camera on my iPhone6 couldn't pick up).
--Darin
In the past there have been some good threads here (IMO) about contrast ratio with graphs and analysis, such as this one by stanger89:
http://www.avsforum.com/forum/24-di...s-apl-study-adjunct-avs-contrast-project.html
I decided to make a video to try to demonstrate something I have been showing in person for a long time. It probably works better in person, but it seems like it works okay in video form too.
I get the impression that there are still people in the industry who believe that ANSI CR tells us the black floor for a system and this video is related to that. In person I try to show people that the black level they are getting when the ANSI checkerboard is displayed with a projector would not generally make a good black floor for the system, even though it can look dark while that checkerboard is displayed.
I posted the video to youtube, since that seemed like a good way to make it easy to access:
If you can't hear the audio, basically what I did was show an ANSI checkerboard, then covered all of image from the projector except for the center of one of the "black" rectangles, then switched the display to an all black pattern (still blocking most of the screen), then took the black velvet board away to show the whole black image (which the camera on my iPhone6 couldn't pick up).
--Darin