Right, thanks guys. Here's one last twister. I took the 3k footage and shrunk it down to 1280x720. Does this change everything again?
Ron Ganbar email: [email protected] tel: +44 (0)7968 007 309 [UK] +972 (0)54 255 9765 [Israel] url: http://ronganbar.wordpress.com/ On 11 October 2011 10:20, Remco Consten <[email protected]> wrote: > Hi all, > > Here you have a handy website I recently found. > > It will give you a filmback for each setting. 3k, 3k ana, 4k etc. for > different camera's > http://arenafilm.hu/alsog/dofcharts/ > > Remco Consten > > > > > > 2011/10/11 Randy Little <[email protected]> > >> I didn't say it was constant, I gave the size for shooting 4k. The >> lens focal length is constant as long as the mount is to spec for the >> given mount. and by constant I mean the focal length of a lens >> doen't change with the amount of image plane being used. So a 25mm is >> a 25mm (sort of) regardless of the resolution you are using on the >> red. The only thing that changes is perceived angle of view. The >> focal length is the distance of the real nodal to the film plan >> always. This changes with focal distance as when you focus the >> rear nodal point moves to adjust convergence on the focal plane (not >> to be confused with focus plane) >> Randy S. Little >> http://www.rslittle.com >> >> >> >> >> >> On Tue, Oct 11, 2011 at 01:14, Ron Ganbar <[email protected]> wrote: >> > Thanks guys for all your help. >> > But I think I'm confused now. There's conflicting answers in here I >> believe. >> > Randy says the lens is as is with a constant film back size (22.2mm x >> > 12.6mm), while Misho says I should use 0.96 conversion for the lens. >> > Basically it's a Red One shooting 3K with an 18mm lens. >> > >> > Thanks again all. >> > >> > Ron Ganbar >> > email: [email protected] >> > tel: +44 (0)7968 007 309 [UK] >> > +972 (0)54 255 9765 [Israel] >> > url: http://ronganbar.wordpress.com/ >> > >> > >> > On 10 October 2011 21:00, Simon Björk <[email protected]> wrote: >> >> >> >> The Red can capture footage in a variety of ways, 4K 16:9, 2K 16:9 etc, >> >> and they all crop the sensor in different ways. To find out what sensor >> size >> >> you should use, just multiply the pixels of your image by 0.0054 (the >> size >> >> of the pixels on the sensor in mm). >> >> For example, if the camera captured footage in 4K 16:9 (4096x2304) you >> >> could calculate the sensor size like this: >> >> 4096*0.0054 = 22.11mm >> >> 2304*0.0054 = 12.44 mm >> >> /Simon >> >> 2011/10/10 Misho Ristov <[email protected]> >> >>> >> >>> Red One 0.96 in >> >>> Red Epic 1.0885 in >> >>> >> >>> - >> >>> Misho >> >>> >> >>> >> >>> On 2011.10.10 8:27 PM, Ron Ganbar wrote: >> >>> >> >>> Hi all, >> >>> needing to cam track some Red footage. Anybody knows what the film >> back >> >>> is, and if I should change the focal length to compensate for a >> different >> >>> size film back? >> >>> >> >>> Thanks, >> >>> Ron Ganbar >> >>> email: [email protected] >> >>> tel: +44 (0)7968 007 309 [UK] >> >>> +972 (0)54 255 9765 [Israel] >> >>> url: http://ronganbar.wordpress.com/ >> >>> >> >>> >> >>> _______________________________________________ >> >>> Nuke-users mailing list >> >>> [email protected], http://forums.thefoundry.co.uk/ >> >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >>> >> >>> -- >> >>> ___________________________ >> >>> Misho Ristov >> >>> VFX Supervisor >> >>> FX3X >> >>> www.fx3x.com >> >>> Jane Sandanski 108/28 >> >>> 1000 Skopje, Macedonia >> >>> cell +38970385680 >> >>> office +38925511985 >> >>> fax +38925511902 >> >>> >> >>> _______________________________________________ >> >>> 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 >> > >> _______________________________________________ >> 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 >
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