Cameras in Houdini are different from those on other applications, let's have a look at how these relate so you can become familiar with them.
One of the first things you will notice is that the camera in Houdini, like every in every other package, is slightly different so here is a quick refresher.
|Focal Length||Focal Length||f = (d/2) * cot (a/2) where f is focal length in mm|
|Camera Aperture||Aperture||a = 2 * arctan (d/2*f) where d = film size in mm|
|Angle of View||-n/a-||You will have to derive it from the previous formulas|
|Film Offset||Screen Window X/Y||1 houdini unit = Aperture * (Maya)|