Here's a good one: http://www.bobatkins.com/photography/tutorials/crop_sensor_cameras_and_lenses.html
-deke On Tue, Oct 11, 2011 at 06:30, Ron Ganbar <[email protected]> wrote: > I haven't. > I get what you're saying. That makes sense. > > Thanks everyone! > I should really get my head around all this projection / field of view > stuff. Anybody has a good resource? > > Cheers, > 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 15:27, Remco Consten <[email protected]> wrote: >> >> No you dont have to change a thing. Only when you crop the plate.. Then >> you have to adjust the filmback. You havent cropped it right? >> >> 2011/10/11 Ron Ganbar <[email protected]> >>> >>> But won't I need to change the size of the film back? >>> >>> >>> 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 15:16, Remco Consten <[email protected]> wrote: >>>> >>>> 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 >>>> >>>> >>>> _______________________________________________ >>>> 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
