Archived posting to the Leica Users Group, 1997/06/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]LUGnuts: Saw this on the usually dormant AOL leica forum. And he is or isn't related, I can't remember. Subj: Re:Leica durability Date: 97-06-20 13:48:27 EDT From: OBarnack With all this talk about Leica durablity, you may be interested in some actual data. As part of a consulting project we recently reviewed the audio-visual and photo lab. records of a major research center of the State University of New York. This facility operates a "lending library" of photo equipment and permits scientists to "check out" a system for the duration of a project. Film is also supplied and records are kept on the number of rolls run through each camera. At the end of the project the equipment is returned, checked out, and readied for the next user. The records cover the period from 1950 to 1996. The database excluded cameras which were damaged by non-photographic use i.e. falling on concrete, submergence, etc. The two longest durability non-SLR 35mm cameras are, in order, ROBOT and LEICA. One Robot has had over 2,000,000 frames run through it since the 60's. A Leica M3 DS made almost 450,000 exposures since its purchase date in 1954. Both of these figures should be taken with a grain of salt. There are very few competitors in this class of cameras. The Robot was used in data recording with exposures taken automatically every few minutes, the Leica as an ID camera in a high security installation. Still, the mechanical longevity of both cameras is several times the norm for professional use. It is likely that an ordinary professional photographer would drop or lose the camera, or would replace it due to obsolescence before it would wear out. Either would last an amateur several photographic lifetimes. In the SLR category, the durability champ was an Olympus OM-1 purchased in 1974 and still in use. It has made nearly 260,000 exposures during that period in the course of documenting ongoing urban renewal projects. All the Olympus SLRs in the inventory required little in the way of repairs or maintenance. Close behind were Canon and Nikon cameras. What is surprising is that the Olympus was criticized for its apparently delicate construction when it was introduced. Obviously the light weight and low inertia of the moving parts contribute as much to longevity as the more massive construction of its competitors. Autoexposure capability did not influence the durability much, although those cameras which controlled exposure by varying shutter speed were significantly more reliable than those that did so by varying lens opening. Apparently the smaller the number of moving parts, the less there was to break. Autofocus, on the other hand, greatly increased the liklihood of repair, halving the mean time to failure. The longest durability roll film camera was a Kodak Medalist II, a WW2 era design by Kodak and widely adopted as a Navy combat camera in the 40s and 50s. This camera, taking 6x9 cm pictures on 620 film, was acquired by SUNY as part of a Navy grant in 1950 was in continuous use in the PR department for 45 years until film became unobtainable. No one knows how many exposures were made before the camera was given to the University. There is no record of repair during that period. - Oskar