film itself made reasonably good technical use of 3d. there were some sections where rapid cuts required reconvergance far too often - i'm not quite sure why people are still doing this. foreground items that go off the side of the screen remain a problem - particularly noticeable when arrows were half on screen with the left eye, and a third on screen with the right eye. the sheer size of imax minimised this.
what would be interesting is for someone to make a 3d film with no cuts - all transitions between scenes to be accomplished with camera motion. what 3d stuff i've seen lacks a real sense of space, and this could accomplish that. beowulf could have done this since it was all motion capture/cgi - and there were some quite spectacular sequences in that direction. but they weren't going for realism in the 3d of this - things were being put right under your nose just for the hell of it. the motion capture/cgi wasn't half bad - still not 100% photorealistic but getting there. skin and faces was very good on some of the characters - downy hairs on people's faces - and you could see every hair in ray winstone's beard.
and as a film? it's not bad. beowulf fights some monsters. angelina jolie has breasts (but no nipples). it's good that special effects technology has now finally caught up to the type of stuff they were writing 1200 years ago.
um, yes, that's all.