A thought has crossed my mind: there's a lot of different filter sizes being used through the range (49 - 67 - 72 - and now also 77 and 82). Some people are going to be irate. I'm almost glad I standardized my junk on 77mm again (3 lenses in that size and just one in 62; there's also a pseudo-72mm lens that has no use for a filter whatsoever 
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