I believe alphas are linear even in an sRGB image (please tell me if I'm wrong...)?
Either way, there is a video colourspace toggle on the merge node which will do the colour conversions under the hood so that your over looks like it will when composited in sRGB. Solid things will always look similar, but semi transparent or motion blurred things will be very different saturations and brightness (try overing a 50 % transparent pink square). Cheers, Andy ----- Original Message ----- From: "Julik Tarkhanov" <[email protected]> To: "Nuke user discussion" <[email protected]> Sent: Tuesday, 15 November, 2011 8:46:08 PM Subject: Re: [Nuke-users] Gamma and Alpha On 14 nov 2011, at 21:13, Gavin Greenwalt wrote: How are Nuke users handling workflows in which they need to deliver images with alpha that will be composited in sRGB space not linear space? It might be mathematically impossible but we do just that when going from nuke to flame with precomps, works like a charm. This answer would piss off the academics but worksforme(tm). As long as it looks good... We do occasionaly tweak the alpha gamma separately though. -- Julik Tarkhanov | HecticElectric | Keizersgracht 736 1017 EX Amsterdam | The Netherlands | tel. +31 20 330 8250 cel. +31 61 145 06 36 | http://hecticelectric.nl _______________________________________________ Nuke-users mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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