Besides the reason mentioned in another message, I believe a bellows is sometimes tapered to make it more compact in the folded state. I doubt whether it is often done in a monorail camera for this reason but for a press cmaera or other folding type it has advantages. Bob Dr. Robert Mueller Institut für Festkörperforschung, FZ-Juelich D-52425 Juelich, Germany phone: + 49 2461 61 4550 FAX: + 49 2461 61 2610 email: [EMAIL PROTECTED] _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers