FCP does not use ColorSync to display video, it has its own color correction and gamma correction routines depending if you are running 601 or 709 formatted video. Quartz Composer, Quicktime and most other apps use ColorSync.
If you have QT 7 installed on your system FCP installs a separate preference called Final Cut Studio Color Compatibility in to the QT prefs. Enable it, and Quicktime now uses the same color lookup as Final Cut Pro does. Open your comp, it should, hopefully, look the same. But this is almost certainly a color conversion routine. On Dec 21, 2010, at 1:32 PM, Patrick Sheffield wrote: > The original image came from a BetaSP tape, but it doesn't matter - I see the > same difference in all material. > > I didn't include a composition as all I'm doing is taking an input image and > the Screen blend node and running it into both inputs, then the result to a > billboard. If I do the same thing in FCP/Motion (place an image on V1/V2 with > V2 set to Screen composite mode), the result is considerably different. I > don't think Quartz is doing it wrong, I just need to figure out what > FCP/Motion are actually doing... > > regards, > > Patrick > > On Dec 21, 2010, at 10:16 AM, George Toledo wrote: > >> No composition? >> >> This makes it hard to discern. >> >> Try using Billboard, and adjusting native core image in settings, to see if >> that makes a difference. >> >> Where are these images coming from? They both have edge crud... is this from >> the screengrab? It looks like a gamma difference (but maybe not). Is that >> happening because the FCP image is coming from something that is already run >> through a codec? >> >> -GT >> >> On Tue, Dec 21, 2010 at 1:08 PM, Patrick Sheffield >> <psheffi...@earthlink.net> wrote: >> >> ...between how Quartz Composer processes the Screen blend mode and how Final >> Cut Pro and Motion do it? >> >> This is an image screened over itself in Final Cut Pro/Motion: >> >> >> >> >> And in Quartz Composer: >> >> >> >> >> In Quartz Composer it's flatter and considerably more red than FCP. >> >> If I perform a Screen Blend (the inverse of the multiplication of the >> inverse), I get the same result as Quartz, but I need to figure out what >> FCP/Motion are doing differently. >> >> Does anyone have any insight? >> >> Thanks, >> >> Patrick Sheffield >> Sheffield Softworks >> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Quartzcomposer-dev mailing list (Quartzcomposer-dev@lists.apple.com) >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/quartzcomposer-dev/gtoledo3%40gmail.com >> >> This email sent to gtole...@gmail.com >> >> >> >> -- >> George Toledo >> gtole...@gmail.com >> www.georgetoledo.com >> >> The information contained in this E-mail and any attachments may be >> confidential. >> If you have received this E-mail in error, please notify us immediately by >> telephone or return E-mail. >> You should not use or disclose the contents of this E-mail or any of the >> attachments for any purpose or to any persons. >> > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list (Quartzcomposer-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/quartzcomposer-dev/doktorp%40mac.com > > This email sent to dokt...@mac.com
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