Thanks to all who helped refine my thinking on "long" process lenses, but it seems as if in LR, one question begets another.
Specifically, I'm trying to get a handle on how common RDA's with aluminum barrels are--certainly less common than the bog standard brass I'm sure, but if they are the proverbial "unobtainium," (or else fetch a premium approaching what I'd spend on a Fuji C 600
) I'll just stick the Bronze Age beastie in my bag and go a little slower up the hill.
And another question (see what I mean?
) can I infer that some/most RDA's won't have the right filter ring pitch to allow the use of modern screw-in filters?
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