[Sidefx-houdini-list] camera aperture

Ben Frost benfrost3d at gmail.com
Thu Apr 9 13:08:59 EDT 2009


this should be useful..

http://www.hv20.com/showthread.php?t=4332

it's specific to the camera, the film back (houdini aperture), is a constant
measurement... you just need to work out the focal length according to the
zoom..

cheers..

ben.

2009/4/9 P. Alex Lim <list at poh-yee.com>

> Hi Peter, Ben, thanks.
>
> So, in order for me to accurately calculate the aperture, I'd need to
> know what kind of camera and film scanner they were using? And
> potentially even needing to find out the dot pitch of the scanner?
>
> Quite interesting. Thank you!
>
>
> Alex
>
>
>
> Quoting Peter Robbinson:
>
> > Hi Alex,
> >
> > http://odforce.net/wiki/index.php/Real-world_camera_matching
> >
> > PeterR
> >
> > P. Alex Lim wrote:
> >> Hi List!
> >>
> >> I guess it never occurred to me to wonder about this until a few days
> >> ago... What kind of information will one need at hand in order to get
> >> a much more accurate camera aperture? I've been told that having a
> >> much more accurate camera aperture would yield a much better tracking
> >> result, so I wondered if there's any possible way of knowing the
> >> aperture without relying on the tracking software to guess?
> >>
> >> Thanks so much! :)
> >> Alex
> >>
> >>
> >> _______________________________________________
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> >>
> >>
> >>
> >
> > --
> > "gravity is not a force, it is a boundary layer"
> > "everything is coincident"
> > "Love: the state of suspended anticipation"
> > "Easy, is not how you make a living."
> >
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>
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