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Author Message   Novembersierra Tinkerer Username: Novembersierra Post Number: 7 Registered: 12-2012 Rating: N/A Votes: 0 Posted on Thursday, February 28, 2013 - 02:21 am:    That should be fixed by adjusting the focus mechanism right? The problem however could be that, since the two lenses must have the same fl, swapping the viewing lens might be impossible as they're (all?) f2.8 and not 3.2 (and too large to screw in the hole of the lens board?) I don't know, just wondering.