Paul Schings wrote
<<I have Olympus 7mm, 14mm, and 25mm tubes. All are automatic diaphragm. I
think
the older tubes ar non-automatic. Not sure when the switch was made.>>
This is the first I heard mention of a non auto tube from Olympus, except
that I have a 7mm non auto that I picked up with a 25mm auto, from an Oly
bin at a camera store.
Am I correct in thinking that the non auto tube will create less vibration
than an auto?
Charlie Loeven
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