I've used HDR with film but admittedly in a hybrid way. Shoot two or more frames of film on a tripod at 1-3 stops apart then scan all three in, combine them and "paint" layers in at certain areas to add detail to shadows or highlights. In many ways same as burning/dodging or masking in the darkroom. I will say I do it much more subtlety than that overdone color HDR crap so often seen.