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Re: [OM] 1:1 with 50m f/1.8

Subject: Re: [OM] 1:1 with 50m f/1.8
From: EdMall@xxxxxxx
Date: Sat, 19 Sep 1998 00:52:28 EDT
In a message dated 98-09-18 11:51:20 EDT, you write:

<< 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
  >>
I have a set of non-auto Zuiko extension tubes (7, 14, 25).  Found them on the
web.  They're not quite as convenient as auto tubes but at $15 who can
complain.  I suppose there's less vibration but is it in any way significant?
This is a valid question, by the way.
Ed

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