I have tried to use: png 8 and 16 bit exr 16bit float tiff 8 and 16bit Same behavior with all of them.
On 29 April 2014 12:20, Martin Constable <jackyoungbl...@me.com> wrote: > An obvios suggestion maybe, but have you thought about moving your > workflow to tiffs? Or exrs? > > PNGs do not store info as floating point. They use integers instead. This > might be at the root of yr problem. > > > On 29 Apr, 2014, at 6:56 PM, Florian Einfalt < > florian.einf...@saddingtonbaynes.com> wrote: > > > I tried both using 8bit per pixel and 16bit per pixel. No difference > unfortunately. > > > > Flo > > > > > > On 29 April 2014 11:51, Martin Constable <jackyoungbl...@me.com> wrote: > > Are yr pngs in 24 bit? That might help. > > > > > > > > On 29 Apr, 2014, at 6:45 PM, Florian Einfalt < > florian.einf...@saddingtonbaynes.com> wrote: > > > > > Hello, > > > > > > I am having this problem with PNGs from Nuke that I need to deliver in > a Photoshop psd-file. This specifically concerns the shadow pass of my comp > but generally there is a discrepancy on everything that is not solidly > opaque. > > > > > > My workflow is as follows: > > > - I write my 8-bit PNG out of Nuke using the sRGB colorspace. > > > - When I open the rendered PNG in Photoshop I assign the sRGB color > profile and over a 'transparent' background the shadow looks to have > similar density to the one in Nuke. > > > - When I comp that layer over a white background though, the shadow is > suddenly more dense than in Nuke. Also, there is a much harsher fall-off in > the shadow. > > > > > > Is this because Photoshop treats alpha information differently from > Nuke? > > > > > > I thought I can maybe counteract this by additional grading in Nuke > but even when I grade the alpha gamma to 0.4545 in Nuke and then write the > PNG I get closer but not exactly to the same result. > > > > > > Does anyone have a suggestion? > > > > > > Thanks. > > > > > > Florian > > > > > > -- > > > > > > > > > Florian Einfalt Senior Digital Artist > > > T +44 (0)20 7833 3032 M +44 (0)7808669580 > > > florian.einf...@saddingtonbaynes.com > > > > > > Saddington Baynes Ltd | Studio 3, 21 Wren Street. London WC1X 0HF. > United Kingdom | Map > > > Disclaimer | Printing? Consider the environment. > > > > > > _______________________________________________ > > > Nuke-users mailing list > > > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > _______________________________________________ > > Nuke-users mailing list > > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > > > > > -- > > > > > > Florian Einfalt Senior Digital Artist > > T +44 (0)20 7833 3032 M +44 (0)7808669580 > > florian.einf...@saddingtonbaynes.com > > > > Saddington Baynes Ltd | Studio 3, 21 Wren Street. London WC1X 0HF. > United Kingdom | Map > > Disclaimer | Printing? Consider the environment. > > > > _______________________________________________ > > Nuke-users mailing list > > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > -- Florian Einfalt Senior Digital Artist T +44 (0)20 7833 3032 M +44 (0)7808669580 florian.einf...@saddingtonbaynes.com [image: Saddington & Baynes] <http://www.saddingtonbaynes.com/> Saddington Baynes Ltd | Studio 3, 21 Wren Street. London WC1X 0HF. United Kingdom | Map <http://signature.saddingtonbaynes.com/map.php> Disclaimer <http://signature.saddingtonbaynes.com/disclaimer.php> | Printing? Consider the environment. [image: Twitter] <http://www.twitter.com/saddbaynes> [image: Facebook]<http://www.facebook.com/SaddingtonBaynes> [image: linkedin] <http://www.linkedin.com/company/saddington-baynes> [image: pinterest] <http://pinterest.com/saddbaynes/> [image: vimeo]<http://vimeo.com/saddingtonbaynes> [image: behance] <http://www.behance.net/saddington_baynes> [image: instagram] <http://instagram.com/saddingtonbaynes>
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