> Alain <kua### [at] videotronca> wrote:
>>
>> It's usualy best, and recomended, to use the same value for look_at and
>> focal_point.
>
> I admit it wouldn't be the first time for me having a rather obscure way of
> seeing and understanding common things, but personally I've just always found it
> important for the scene to fine-tune look_at and focal_point independently to
> get the camera angle as desired and furthermore to have the blur in the correct
> point. My own recommendation would thus be that it certainly depends on what you
> are having in the scene and what you want to emphasize. :)

Right. But, initialy, having the two been identical is simpler and less 
error prone. Nothing can prevent you from changing the focal_point for 
the final render.

>
>> To match the original, you only need to negate the value for right:
>> right -x*image_width/image_height
>
> Ah, of course, forgot about that one completely. I should sleep more. Or drink
> more tea. %-)
>
>

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