Well in Nuke sRGB is purely a gamma curve. Unless you are really using the colorspace node to do more then apply the gamma curve. In Photoshop its a color space always. Also regarless of what icc you use. Even if its linear the blend modes are still your probably I beat. Randy S. Little http://reel.rslittle.com http://imdb.com/name/nm2325729/
On Wed, Mar 7, 2012 at 07:14, Rich Bobo <[email protected]> wrote: > Thanks, Julik, Andy and Simon for your suggestions, ideas and questions. > After trying a number of things and reading some more about the way ProEXR > and Photoshop handles things, we're going to try to make our tweaks in Nuke > and let Photoshop do whatever it does. It may take a few rounds of tweaking > and converting to see what we need to do on the Nuke side to make it come > out the way we want on the Photoshop end. However, it seems like there are > just too many variables there. So, we'll not try to fight it... (8^\ > > > Thanks for your help! > > Rich > > > Rich Bobo > Senior VFX Compositor > Email: [email protected] > Mobile: 248.840.2665 > Web: http://richbobo.com > > > On Mar 07, 2012, at 07:00 AM, Simon Björk <[email protected]> wrote: > > In what application are you comparing the result of the TIFFs? Nuke or > Photoshop? I believe Photoshop use linear light math when in 32bpc and in > that case, the blending of layers (and brightness) will look different if > you change your project to 8 or 16-bit. > > > > 2012/3/7 Julik Tarkhanov <[email protected]> >> >> >> On 7 mrt 2012, at 01:51, Rich Bobo wrote: >> >> The problem is that we need to get 8 bit layered TIFs out of Photoshop. >> >> I think the first problem is that the Photoshop blending is profoundly >> affected by the bit depth. >> The second problem is that if Nuke does a 1D lookp table conversion from >> one kind of RGB to another >> (including bit depth upgrades), Photoshop goes via Lab so what is >> happening is more like to a 3D LUT. >> >> What happens in your case is that probably Photoshop is converting the >> layers first, and then the result of the blending >> modes changes the way the images look. Maybe it's an issue with layer mask >> and front unpremultiplication and conversion. >> >> For me the first thing to check would be the PS profile settings for 8-bit >> RGB. Also, where do the discrepancies occur the most? >> Blended layer edges? Maybe your workflow needs to be related to manually >> unpremulting layers by the layer transparency and >> preadjusting the transparency grays... >> -- >> 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 > > > > > -- > -------------------------------- > Stiller Studios > Lidingö/Sweden > > Simon Björk > Stiller Studios > +46 (0)8 555 23 560 > Ekholmsnäsvägen 40, S-181 41 Lidingö > [email protected] > www.stillerstudios.se > > find us: > http://www.eniro.se/query?search_word=stiller+studios&geo_area=liding%F6&what=all > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users _______________________________________________ Nuke-users mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
