It's a shame the standard Renderman header does not quite have all the projection info. But the Vray metadata actually stores the focal length by default. Ivan, I think you mentioned a while back it would be good if the actual film back width was stored.
Michael On 25 November 2012 13:22, Patrick Heinen <mailingli...@patrickheinen.com>wrote: > +1 > > I thought there was a convention how to store a camera matrix in an exr. > > cheers > Patrick > > Am 25.11.2012 um 22:07 schrieb Ivan Busquets: > > +1 > > Renderman has had a standard and consistent way of writing those out for a > while, but throw other renderers into the mix and it's very hard to write > tools that will work for any given render. > > It would be great to see this standardized for sure. > > > > On Wed, Nov 21, 2012 at 5:36 PM, Johannes Saam <johannes.s...@gmail.com>wrote: > >> The header would be such a perfect way to deal with this, if only we >> could have ONE standard to do it. Anyone up for a challange to standardize >> it? Come up with ONE way and persuade renderes to do it all over? >> I am on your side :) >> jo >> >> >> On Mon, Nov 19, 2012 at 1:14 PM, Deke Kincaid <dekekinc...@gmail.com>wrote: >> >>> Adding on top of what Michael mentioned. If you happen to use Vray then >>> your in luck as the camera matrix is embedded in the metadata. I can’t >>> remember if it was in house script or not but I have also seen it built >>> into Arnold and Prman exr files. MR though your probably SOL. >>> >>> -deke >>> >>> >>> On Sun, Nov 18, 2012 at 4:09 PM, Michael Ralla < >>> michaelisbackfromh...@gmail.com> wrote: >>> >>>> In case you are handed exr's, I'd have quick look first if there's >>>> possibly camera data in the header of your xyz/pworld pass. There's a good >>>> chance you might find a translation and projection matrix you might be able >>>> to use to generate a camera that should match the camera the sequence was >>>> rendered with - without having to resort to xyz-pass trickery... >>>> >>>> Cheers, m. >>>> >>>> >>>> On Sun, Nov 18, 2012 at 5:33 AM, Howard Jones >>>> <mrhowardjo...@yahoo.com>wrote: >>>> >>>>> Hi >>>>> >>>>> Has anyone got a method of creating a camera from a world position >>>>> pass? >>>>> I'm thinking of scenarios where your 3D dept is struggling to create a >>>>> usable camera, either through laziness, lack of knowledge or just >>>>> reluctance. >>>>> You have got a ppass (eventually), so it should be possible to >>>>> retrofit a camera, as all the info is essentially there on a plate. >>>>> >>>>> Obviously not something a big facility has to deal with, but I have >>>>> found an issue in the past, and possibly next week. >>>>> >>>>> Cheers >>>>> Howard >>>>> >>>>> _______________________________________________ >>>>> 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 >>>> >>> >>> >>> _______________________________________________ >>> 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 >> > > _______________________________________________ > 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 >
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