[Leica] Fw: APO-Extender-R advice

["Greg Bicket" <GBicket@email.msn.com>]

This message apparently got caught in the server crap-out.  I forward it as
I am very interested in any advice LUGgers might have in this regard.

Many thanks,

Greg bicket
- -----Original Message-----
From: Greg Bicket <GBicket@email.msn.com>
To: LUG <Leica-Users-Digest@mejac.palo-alto.ca.us>
Date: Monday, October 19, 1998 7:50 AM
Subject: APO-Extender-R advice


>Good morning LUG--
>
>I would like to ask advice of R users who have experience with the Leica
>APO-extenders.  I have used tele-extenders before with other brands of
>cameras, with unsatisfactory results; degraded sharpness, very soft edges,
a
>general haze.
>
>Primary use would be in photographing shore birds and waterfowl, and the
>primary lens "extended" would be the APO Telyt-R f4 280mm.  A wonderful
>lens, but often not enough for skittish wild birds.  However, the 280 is a
>wonderful lens, and I would rather wrestle around and find the lira for
>something longer if the extenders are not going to deliver the quality I
>have come to expect of this lens.
>
>So quality is first; I would buy the APO version of the extender.
>
>If the quality is there, the next issue is which one to buy, the 1.4X or
the
>2X?  Is there a difference in image quality between the APO versions of
>these two?  Perhaps some of the LUGgers who have used both can help me with
>the telephoto length increase versus loss of speed issue.  With this
>particular lens, the 1.4X would take me to an f5.6 400mm and the 2X an f8
>560mm...obviously, greater "pull" is appealing, but with f8 as the fastest
>selection, I would be at the edge of difficult shutter speeds for such
great
>length, even with a sturdy tripod and MLU.  This would be mounted on an R8,
>so I've got the brightest SLR viewfinder going.
>
>There are old Telyt R's in very good condition around for about the price
of
>a new APO extender.  Both the 400 and 560 are f6.3.  This poses a quality
>question--which version, extended or prime, will render the best image on
>film?
>
>Any experiences LUGgers have had in sorting out the best decision in this
>context will be appreciated.  Thanks in advance.
>
>Enjoy the light!
>
>Greg Bicket
>__________________________
>
>By the way, in response to those who've asked about potential LUG
>server/software problems, I am getting  messages repeated from one digest
to
>another, and I am seeing answers to questions and responses to comments to
>which I have not seen the original post.
>
>GB
>
>