Re: "real" cameras in xsi

["Marc Bourbonnais" <marc(at)hybride.com>]

Yup, one of my pet peeves in XSI is the default HD aperture size, set at 
0.3465" x 0.1949". This is for 4:3 sensors, close to worthless. True 16:9 
sensors have measuments mentionned by François, Chris and Robert. So anyone 
using the default XSI cameras is working with incorrect FOVs or lens. I got 
it wrong myself on our first HD film prod, like 5 years ago.

--
Marc Bourbonnais
3D TD
Hybride
(450)227-4245
----- Original Message ----- 
From: "Chris Shaw" <cjdshaw.bulk(at)blueyonder.co.uk>
To: <XSI(at)Softimage.COM>
Sent: Wednesday, January 25, 2006 12:39 PM
Subject: Re: "real" cameras in xsi


> Just remembered that HD is 16:9, not 4:3, so my filmback size was wrong. 
> You want
> 9.6mm x 5.4mm
> or
> .3780" x .2126"
> which on your 7mm lens would give you a horizontal FOV of
> 68.885°
>
> Chris
>
> Gene Crucean wrote:
> > Holy thread revival batman!
> >
> > I'm still a little confused by this stuff (I know I know). So in boujou, 
> > it wants the film back size (which I don't have, but I know it was shot 
> > on a Sony HDW-5900H), and the focal length which is 3'2". I tried 
> > searching on the web for the film back size of that camera but no 
> > information for that camera even comes up at all. So I guess my first 
> > real question is does anyone know the FB size of that camera? The only 
> > information that we have on the camera is the lens (7m which I'm assuming 
> > is a typo meant to be mm), the foc which is 3'2" and the PSF which is 
> > 23.98. Well and some other random info like height, tilt, Tstop, roll 
> > etc.
> >
> > I ran a quick track on it without using the correct FB info and no 
> > surprise it comes into xsi with a FOV of something like 12 (way off 
> > visually). I'm a little confused with all this conversion stuff so any 
> > input would be appreciated.
> >
> > Thanks guys
>
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