I think it doesn't really matter because It keeps the 16:9 aspect... You will only lose resolution while tracking....
Remco Consten 2011/10/11 Ron Ganbar <[email protected]> > 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 >> > > > _______________________________________________ > 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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