Blender official manual, obtaining depth of field using a camera parented to a ring. Parenting the camera to a circle stops the camera tracking the empty object (camera target). The camera screws into some random direction and I no longer can switch tracking on.

This stops me finishing my long, tiring project I`ve been doing since... several months... It makes me really mad. Help welcome!

Have you try to parent camera to circle and then make the track?

Yes. I tried it several times, before and after clearing its rotation :<

And a new camera without rotations, with a new circle and a new empty?

Finally I used another option for parenting [follow path, or so], instead of just typical one advised in the manual. It works but now the camera has its z axis just up instead of being a bit twisted left. Hope there`s another way of fixing it apart from just rotating everything else :< If you know some way, please share:)

Look at "Constraint" panel, in animation place. Try "Up" parameter.

OK, thanks. Finally I just used the example scene from the Manuals CD. It works now but anyway, I have to locate the camera with one axis up. Its awfully limiting since I want it to be a bit more dynamic. Is there any way of doing this kind of DOF w/o making the cam heading one of its axes upwards? And when, *&^%$^&$%, will be DOF included in the internal renderer?! If YafRay can, why cant internal?! C4D has some better or worse DOF in 2000, why cant Blender have it in 2006?!

BDW, it exist a DOF script plug-in, search on elysiun. We can use it before it will be included in the internal renderer...