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film back?
Posted: Sun Aug 01, 2010 7:59 pm
by stenson
What is the film back size in octane?
Feature request:
manually setting the film back.
cheers
Re: film back?
Posted: Mon Aug 02, 2010 12:50 am
by [gk]
What do you need the filmback for?
It cant be for tracking, because when you track footage you dial in your cameras filmback in the tracker and get a cg camera generated automaticly and with that a camera fov and image plane in your host app you can port over to octane automaticly.
Re: film back?
Posted: Mon Aug 02, 2010 10:20 am
by radiance
what's a film back ?
Radiance
Re: film back?
Posted: Mon Aug 02, 2010 10:41 am
by stenson
radiance wrote:what's a film back ?
Radiance
The actual film in the camera, now days the sensor. The size of the media that's capturing the images.
@gk
as far as i know Octane uses the xfov. That's calculated:
xfov = 2*atan(0.5*filmWidth / focallength)
the more unusual fov is the yfov, maybe not that useful, but calculated:
yfov = 2*atan(0.5*filmHeight / focallength)