"Glen Berry" <7no### [at] ezwvcom> wrote:
> First, can someone confirm that the camera "location" value is
> actually jittered, while ALL other dimensions and parameters are held
> constant, to produce the focal_blur?
Thats what I assume, ...

> Second, I assume that the "aperture" value DIRECTLY specifies the
> magnitude of the RADIUS (not diameter) of the jittering, as measured
> in POV-Units. Is this correct?
... this too, but I haven't had a look at the code yet, so I can't confirm ...

> Third, is the array of jittered camera locations arranged in a square
> grid, or is it arranged in an approximate circular pattern? I've been
> assuming square, but circular would better approximate a typical lens.

This can be confirmed at least for 3.1 POV (I don't think it has changed
in 3.5 yet), as you can see yourself in a scene like this: put one single
small sphere between the focal-point and the cam-location. use a quite big
aperature, and you will see, that the object appears as a square ...
this leads to the conclusion, that the jitter doesn't happen in a circular
manner, but will probably be to the same amounts in x-y-z direction ...

> Finally, if anyone spots any errors in the 35mm camera emulation I
> have listed above, please let me know. I *think* what I have so far is
> a fairly accurate emulation, but I might also have overlooked some
> details. Please let me know if I have.
looks good so far ...

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