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11-02-2012, 10:04 AM   #16
Lowell Goudge's Avatar

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QuoteOriginally posted by Just1MoreDave Quote
snip.......The oddest thing is, it's rare to find any parts from one focal length that come close to fitting on another one, besides screws and mounts.
But if you stop and think about it, one of the interesting things about the M series lenses is that almost 100% of the lenses take a 49mm filter. That makes focusing collars, lens barrels, and aperture rings all the same diameter, just focusing collars and lens barrels different lengths,

Maybe it is not so far afield as we think

11-02-2012, 10:32 AM   #17
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My M135/3.5 is like the one on the right with the DOF scale going to f/32. There are only 2 possibilities. It was either repaired with a different part or some lenses were made and shipped with misprinted scales before the mistake was noticed. It would make no sense to have a DOF scale that didn't match the aperture ring.

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