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. >
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