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 >
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