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JimBuchanan wrote:
There was a Canon "memo", on some 5D mirrors coming loose and yesterday, Canon confirmed replacement of the whole mirror assembly, at no charge. So, I narrowly skirted a $300+ repair bill.
The mirror on this 5D, which is apparently defective, had a very thin plastic film adhesive holding it to the mirror frame. The way I noticed it was about to come off was because the viewfinder was way off on the focus, when it had been perfect before. I then notice that one corner of the mirror was not resting on the stop on the side of the mirrorbox, thus throwing off the viewfinder focus. The mirror was separating from the frame.
Yes, I could play around with the mirror, grinding off a little more, re gluing it back in the frame, hoping the glue thickness is the same as before, then maybe having to test and shim for accurate focus, but I would still have glass dust flying around in there and a ugly mirror. When the mirror separated completely, there was a layer of glass dust covering the back side of the mirror, as the frame is just a frame (center part open for the secondary mirror). Or, I can get the whole mirror assembly replaced, mirrorbox cleaned, as new at n/c, and I'm back where I started from.
The big question is do I start over with the dremel or not. I'm inclinded to find a lens solution that doesn't require the shortened mirror. That way, with a stock mirror I can test all these FL55/1.2s for mirror clearance. That one is right on the borderline for mirror clearance at infinity.
For me, my lens solution is the 28 R Elmarit, 60 R Elmarit (essentially a slower close focusing Summicron), and a fast 85, which brings me back to the FD85L. I still have a perfect Rokkor 58, but I'd rather have the fast aperture around the 85mm focal length. I think the FD85L beats the 80 R Summilux on wide open sharpness and contrast. Like its little brother FD50L, the FD85L has no focus shift, in my opinion, indicative of superior optical design.
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Don't know about 85, but Ai-S 50/1.2 clears my 5D mirror without any issue.
Where is this info about mirror assembly replacement posted at?
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) it might not be the ideal choice for some of us. I suspect there are those who would opt for one of the FDs regardless of price.
