>I'm not against a toggle at all, but I do insist on consistent levels being >produced through EVR, VMR9, VMR7, overlay, desktop, video games, etc.
since SP1, latest nvidia drivers, PDVD8, I now get:
PC levels for SD DVD, HD DVD, Blu-ray, desktop
but Video levels for VMC HDTV
>I'm also absolutely firm in my belief that the system should auto configure >for PC vs TV levels dependent on if a monitor or a TV is hooked up. After >that, a toggle would be an excellent addition and actually required for TVs >or monitors that declare themselves incorrectly.
I would say a toggle needs to be a necessity then. Supposing it senses a TV but I have it hooked up with HDMI port named PC, on my TV that means it wants 0-255 but my PC still thinks it is a TV and would then force 16-235 without a toggle
. And what if I want to use ICC profiles? I can get them to work for SD DVD, VMC HDTV, photo viewing, if it forces video levels then it will apply the ICC wrongly! And what if I want to view photos on my HDTV, if it forces video it would totally mess over the photos! If you want it to automatically to default to something, fine, but then it MUST have a toggle for sure too.
>To fix this I have to manually crank up the overall brightness within the >Catalyst Control Center to +15 and turn down the overall contrast to 85%. >Once I do this, everything, including photographs, TV, video, Blue-ray, >desktop background, etc. displays correctly and with appropriate grey levels.
you are losing fidelity on your desktop and photos doing that, not that you have any choice though with that TV of yours that unfortuneatly only takes video levels
>I personally don't understand why there would be a need to provide d>ifferent grey scale levels for desktop vs TV vs video vs Blue-ray, etc. If t>he display can only display 16-235, the video card needs to convert >everything from 0-255 into 16-236 for output.
>Similarly if the display is able to properly display 0-255, then the full 0-255 l>evels needs to be used and since TV content comes into the PC at 16-236, >this particular content needs to be expanded to 0-255. Photographs and >images already are stored using 0-255 so they don't require any expansion.
most TVs these days are swapable between 0-255 and 16-235 with a menu toggle and i'm not sure if the there is anyway for the PC to know that, so how would it know whether to use 16-235 or 0-255 if it senses a TV?
I don't know maybe the TV does send a signal back that can be read by the PC.
>Right now this situation is a total mess with Nvidia cards - so much so that >grey levels don't even work properly when PC monitors are used.
>Regardless of what gets expanded and where it happens, ATI does have it >working correctly right now (with Vista SP1 installed). With ATI, everything >is output using 0-255 (expanded as required) unless HDMI, s-video or >component video is used.
but SP1 screwed it for nvidia for me.
I used to have it all 0-255 for the recent number of months but now
now VMC HDTV ATSC is suddenly 16-235 (even though SD DVD is 0-255 now).