Chris Gillis , Mar 13, 2004; 11:32 a.m.
I have the 340 with a 1315 colum. As far as I know, they are the sme. There might be some small difference, but nothing to write home about. My only concern about the 340 is that it might be a bit heavy for my use, which is only 35mm with normal lens lengths. That said, I never worry about stability and I always think about the final value of a photo before I go off on some long hike for a single shot.