Re: [OM] hiking outfit

Subject: Re: [OM] hiking outfit
From: Richard Schaetzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
Date: Sat, 19 Sep 1998 18:42:37 +0200
Joseph Albert wrote:
> Note that I prefer a non-floating element macro lens as a workhorse
> lens for macro work.  although the 90/2 macro is the better general
> purpose lens, and a superb macro lens as well, I find the Tamron 90/2.5
> or tokina 90/2.5 macro's to be more convenient for actual macro work.  the
> reason is that they are *not* floating element lenses, so it doesn't
> matter whether extension is in a tube of in the lens helicoid.  

I don´t know for the Tamron, but my Tokina kataloge says, that the
Tokina AT-X M90 90mm/2.5 macro lens "is equiped with floating element to
provide optimal optical quality for the whole range of focusing". "The
macro extender was designed to keep optical quality and maximum
So I doubt, this lens will deliver optimum performance on an bellows or
macro tubes. 


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