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RE: [OM] opinions of short Olympus teles

Subject: RE: [OM] opinions of short Olympus teles
From: Suchismit.Chakravorty@xxxxxxx
Date: Wed, 25 Jul 2001 15:33:06 -0500

   ----------
   From:       "Skip Williams" <skipwilliamsom@xxxxxxxxxxx>
   Sent:       Wednesday, July 25, 2001 3:05 PM
   To:         olympus@xxxxxxxxxxxxxxx
   Cc:         "Skip Williams" <skipwilliamsom@xxxxxxxxxxx>;
               zbturon@xxxxxxxxxxxxx
   Subject:    Re: [OM] opinions of short Olympus teles
   
   Re the 85/2 and its design:
   
   http://www.datasync.com/~farrar/zuiko.html#tele says the 85/2 MC has
   the 
   Floating Element correction.
   
   The eSIF at http://www.taiga.ca/~esif/om-sif/lensgroup/85mmf2.htm
   says of 
   the 85/2: "It incorporates a floating element group for the first
   time in 
   the world for a telephoto, ensuring superior image quality even at
   close 
   distances."
   
   An OM System Brochure from January 1987 lists the following lenses as
   having 
   "automatic correction mechanism agains close distance abberations"
   18/3,5
   21/2,0
   24/2,0
   28/2,0
   50/2 Macro
   50/3.5 Macro
   85/2
   100/2,0
   (The 90/2 Macro is not listed as having this mechanism.)
   
   So my vote would be that the 85/2 DOES HAVE the floating element, at
   least 
   in MC guise.  I don't have an early Zuiko brochure in front of me,
   could 
   someone check an early 80's brochure for the same sort of language?
   
   The surprise to me is that the vaunted 90/2 Macro doesn't have the
   floating 
   element correction.  Perhaps it's corrected for close-up distances
   already?  
   So it doesn't need the FE?  But why would the two 50 Macro lenses
   need such 
   a device?  Are 50's corrected more for infinity, even in the case of
   the 
   Macro lenses?
   
   Skip
   
   
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   >From: "Globtroter" <zbturon@xxxxxxxxxxxxx>
   >Reply-To: olympus@xxxxxxxxxxxxxxx
   >To: <olympus@xxxxxxxxxxxxxxx>
   >Subject: [OM] opinions of short Olympus teles
   >Date: Wed, 25 Jul 2001 20:56:12 +0200
   >
   >Hi, All!
   >According my latest sources on Zuiko
   >lenses, these ones are WITH floating
   >element design:
   >18/3,5
   >21/2,0
   >24/2,0
   >28/2,0
   >90/2,0
   >100/2,0
   >
   >So, All the rest is of a "plain" construction,
   >among them:
   >16/3,5
   >21/3,5
   >24, 28 and 35/2,8
   >35/2,0 - as well,
   >50/3,5; 2,0; 1,8; 1,4; 1,2
   >and so on.....
   >and finally 85/2,0 is without floating element design.
   >I have serious doughts if 85/2,0 has ever had the mechanism,
   >it is quite simple and cheap lens like 35/2,0.
   >
   >Best photos anyway,
   >Zbigniew Turon
   >(Zuiko 85/2,0 owner)
   >
   >
   >
   >
   >
   >
   >
   >
   >
   >..................................
   > > Gary, my 85/2 sn 105406 (pretty early) doesn't seem to
   > > have a floating element.
   >.......................
   > > Warren
   >
   >
   >
   >
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