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[OM] RE: olympus-digest V2 #1675

Subject: [OM] RE: olympus-digest V2 #1675
From: "Windrim, Brian" <brian@xxxxxxxxx>
Date: Mon, 12 Jun 2000 17:16:09 +0100
Dirk Wright wrote:

>> Maybe another factor is whether the lens uses a
>> floating element? Maybe the lens has to be larger
>> in diameter in order to accomodate the extra mechanism
>> for that??

The floating mechanism tends to be toards the back of the lens,
so it might affect the diameter there, but not (I would expect)
at the front.

>> But, I think the 85/2 has a floating element???

Mine doesn't, and it dates from 1992. The OM System brochure
that I have (from around 1989) flags those lenses which have
"close-up aberation correction mechanism" and the 85/2 isn't
one of them.

On the 28/2 you can see the floating element in operation as
it rotates with the focusing ring while the rest of the elements
stay fixed relative to the mount.

-Brian


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