3D objects from Photoshop

I'm looking through the After Effects help topics, but as often happens can't find the answer to a very basic question in a basic form: can you bring in a 3D object from photoshop and place it in 3D space in Ae, and be able to rotate it of rotate the camera around it? I don't mind it being complex to acheive, I just like to know it can be done before I start wading through so much reading up.

I can build it in After Effects by bring in each surface as a flat image and positioning them in 3D (and parenting all other sides to one surface), but this takes a while to set up and isn't quite as "solid" as the 3D objects in Ps are. I also wonder which would be more taxing to render.

I like the way they turn out in Photoshop as 3D models, but if I can't take the results into a 3D After Effects composition then there's not much point in creating them. So far my attempts to import a Ps file as "live 3D" have resulted in a flat picture of how the object looked when the file was saved in Ps.
Not very useful.