I think maybe you miss-read Abraham. You use the grade node to convert from legal to extended rec709. Then use a colorspace node to convert from rec709 to linear.
-deke On Mon, Jun 6, 2011 at 23:30, Paul Fiebiger <[email protected]> wrote: > Hi; > Converting rec709 to linear with grade works in that I don't have any > clipped values above 1023 or below 0, but now the new image looks washed > out. > Is there a way to convert to linear space and keep an identical image? > > Thanks > Paul > > > On Mon, Jun 6, 2011 at 2:58 AM, Abraham Schneider <[email protected]> > wrote: >> >> Hi there! >> >> Not quite sure what you're trying to achive: first converting legal >> range rec709 to full range rec709 and then convert it to normal linear >> footage? >> >> Getting from legal range to full range could be done with a single >> grade node. Just use "64/1023" as value for blackpoint and "940/1023" >> as whitepoint. This expands the values between 64-940 to the range >> 0-1023. >> >> Afterwards you could use a normal colorspace node to convert from >> fullrange rec709 to linear. >> >> Abraham >> >> >> Am 04.06.2011 um 20:29 schrieb Paul Fiebiger: >> >>> Does anyone know of an elegant solution to legally scale rec709 >>> (64-940) to rgb (0-1023)? >>> I ultimately would like to convert rec709 to linear rgb without >>> having black and white values get clipped. >>> >>> Thanks >>> Paul Fiebiger >>> >>> >> >> Abraham Schneider >> Senior VFX Compositor >> >> >> ARRI Film & TV Services GmbH >> Tuerkenstr. 89 >> D-80799 Muenchen / Germany >> >> Phone +49 89 3809-1269 >> >> EMail [email protected] >> www.arri.de/filmtv >> _______________________________________________ >>> >>> Nuke-python mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> >> ________________________________ >> >> >> ARRI Film & TV Services GmbH >> Sitz: München Registergericht: Amtsgericht München >> Handelsregisternummer: HRB 69396 >> Geschäftsführer: Franz Kraus, Dr. Martin Prillmann, Josef Reidinger >> _______________________________________________ >> Nuke-python mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > > > -- > Paul Fiebiger > Technical Director > ICO VFX > 727 South Main St. > Burbank, CA 91506 > 818-766-6070 (o) > 520-975-0280 (c) > www.icovfx.com > > _______________________________________________ > Nuke-python mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > _______________________________________________ Nuke-python mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python
