stephan_paier Posted June 23, 2007 Share Posted June 23, 2007 Hi! I don?t know, if this has been discussed, search gave me no results, but I?d like to know if anyone has ever converted a 2cam lens to a 3cam by him/herself! If so, I would appreciate to learn how! What do you need, what to you have to be aware of and so on ... The lens I want to convert is a 2,8/35mm lens which is 2cam. Thanks in advance, Stephan Link to comment Share on other sites More sharing options...
jerry_kirkwood Posted June 23, 2007 Share Posted June 23, 2007 I had all 2-cam lenses with my SL2 but when I added an R7 I had (well, preferred) to have them converted. It was a while ago (at that time the 3rd cams were still made of metal, someone told me now they are plastic)but if I'm not hollucinating, I remember the repair gal saying she had to drill and tap holes for the 3rd cams. It cost me all of $50 a lens and she cleaned and adjusted them for nothing. If you need to drill and tap, I'd think you'd get brass shavings down into the works if you didn't at least take the lens apart. Wish I could be more helpful. Link to comment Share on other sites More sharing options...
ronald_moravec1 Posted June 23, 2007 Share Posted June 23, 2007 Like the TV commercial on how to do your own surgery. STUPID! Link to comment Share on other sites More sharing options...
angora_leica Posted June 23, 2007 Share Posted June 23, 2007 Stupid comment, Ronald. Link to comment Share on other sites More sharing options...
dan flanders Posted June 23, 2007 Share Posted June 23, 2007 It is no big deal to drill or grind on a lens mount without disassembly. All that is necessary is that the glass be protected and open seams be sealed with tape. The amount of dross generated is inconsequential. Of course it depends upon the location of the work and obviously some locations might prove complicated, but work on the flange of the mount would not seem to be an issue. Many a Summicron C has had its cams altered without complications! Link to comment Share on other sites More sharing options...
doug herr Posted June 23, 2007 Share Posted June 23, 2007 I would not try the drilling/tapping route without some means of ensuring that no shavings get into the works because bearings for the inner aperture ring (the piece you'd be drilling in to) are right next to the holes you're drilling and the least bit of shavings in the bearings will slow the aperture mechanism causing over-exposure in most cases. Some people have epoxied a metal tab onto the 2nd cam to add partial 3rd-cam function but you'd have to do this quite accurately to get accurate meter readings, and this will not add the second step of the cam which enables shutter-priority and program modes on some bodies. Link to comment Share on other sites More sharing options...
stephan_paier Posted June 24, 2007 Author Share Posted June 24, 2007 Hi and thanx! I hoped it would be easier! Just glue some kind of selfmade iron staircase on to the 2nd cam. But if I find a repairman who does it for me for 50$/?, then I would have it done, no question at all. Next step: Search a cheap service/ repairman. Greets, Stephan Link to comment Share on other sites More sharing options...
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