Quote:
Originally Posted by gazbarber Rob does this have any bearing on real performance, or are you just obsessed?
1280 x 720 @ 47.952Hz seems pretty damn specfic. |
I'm not obsessed
As I've said many times before in numerous threads, the only way to watch "film" (be it a R1 SD DVD or HD DVD/Blu-ray) without 3:2 judder or any other judder for that matter is at a multiple of 23.976 fps/Hz.
1080p24 is
not 24 fps/Hz. The true frequency is 23.976Hz.
Although we know the AX-200 will accept 1080p24 (and I think from what I've read elsewhere it will refresh at 47.952Hz, displaying each frame twice) I want to do the scaling in my Lumagen HDQ and pixel match 1:1 therfore avoiding additional scaling in by the PJ. I very much doubt the AX-200 will accept 1280x720 @ 23.976Hz, but there's a (good?) chance it will @ 47.952Hz.
Unfortunately it's not just a case of if the PJ accepts the resolution/refresh it's a case of what it does with it. Hence the JudderTest to prove that it's not internally converting it to 60Hz (59.94). It's common for the display (be it a PJ, LCD or plasma "flat panel") to convert anything outside of it's "native" working range back to 60Hz for display.
I am able to do 1280x720 @ 47.952 into my HS60 using the VGA input, but it will only work at 50Hz or 60Hz (59.94) using the HDMI input. This works well especially on SD sources as the slight softness of the VGA connection hides (well it helps a little) MPEG artifacts etc, but I crave the extra sharpness (of the HDMI) when watching HD DVD and Blu-ray which is 99% of what I watch these days.
Rob.