> Hi Tom, > > This guy is a whiner and trying to blame his own poor > maintenance for this failure. Nothing could be farther form > the truth! By his own description the screws did not part > from the mount but were simply loose and unscrewed! > How is this the mount's or manufacture's fault? If your > brakes were worn out and you hit another car is this the car > maker's fault? Do the math! > > People are spoiled with reliable modern electronic based > camera bodies. > This is something that almost nobody talks about, how often > people clean and check their equipment. One of the things > that I learned long ago (before reliable analog electronics > came in SLRs), is that stuff happens to mechanical gear > that's used in the field a lot and the BEST way to control > repair costs and reduce/prevent major failures during a shoot > is to check your equipment after EVERY shoot and get it fixed > now, not later. > > Back in the olden days (30+ years ago), when I primarily shot > products with cut film cameras (though I did have to shoot > with the agency Nikon F's once in a while for cheap clients > or small print images), I was taught to check every > externally accessible screw with a screwdriver after every > major shoot in the studio, this was SOP. > > I've continued this practice along with a wipe down with a > gun cloth or micorfibre cloth and visual inspection of all > straps and external strap lugs and mounts. I have NEVER had > a body lens mount or lens mount fail in the field, there is > no excuse for this except for poor work habits. I did have > had a strap swivel fail internally on my EF 300 2.8L with an > EOS 1N and booster mounted, that lens and body is now > corroding in 600' of Pacific ocean. This was caused by a > failure of the swivel internally to the lens body, the strap > was still connected to the swivel as I tried to keep the lens > in the boat! Sigh. > > > Cheers/Chip
All of what you say makes good sense to me for someone using their equipment daily for a living, but the last lensmount I came across that was loose was a 30 year-old Vivitar. With today's manufacturing techniques and the extra careful handling us amatuers give our equipment(NOT something pros necessarily do), the lens mount just shouldn't just come apart in your hands, whether it was made by Canon, Sigma or anyone else. Anymore than a wheel should fall off my car because I forgot to check my lug nuts every day. Professional race drivers probably do, though. Tom P. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
