Again, the lens that was mentioned below was the f/2.8 1:1 model that has
inferior performance. The f/2.5 version YOU are mentioning has the excellent
reputation as shown by the testers. The vivitar Series one 105mm has also been
shown to be inferior to their 90mm version.
Larry
> I strongly disagree!
> In Practical Photography Aug1993 the Tamron
> 90mm f2.5 came out on MTF tests slightly behind the Canon macro ef 100 and
> Nikon 105mm micro nikkor - BUT ahead of Minolta, Pentax, Sigma, Vivitar
> series1 105 f2.5 and Elicar. Testers notes... Quite suprisingly,the edge
> definition produced by this lens is marginally better than the centre. It
> can be used at all apertures confidently........What a beauty. Quality
> focusing, construction and results at a very decent price.
> I bought my 90mm macro f2.5 as a result of this test review and I must say
> that my experience with this lens has confirmed the quality. The only
> reservation I had about this lens was the polycarbonate collar above the
> aperture ring. This has a transparent window through which you read the
> distance scale. However this has stood up to 8yrs wear and tear with no
> problems. My suggestion - If you get a chance try this lens out for
> yourself, you might be pleasantly supprised!
> Regards, John Duggan,
> Wales, UK.
> ----- Original Message -----
> From: "John Hudson" <xyyc@xxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Wednesday, August 08, 2001 4:45 AM
> Subject: Re: [OM] Tamron 90mm lens
>
> > John Hudson wrote:
>
> Over the last several months I have seen 35mm black and white and colour
> 8x10, 11x14, and 16x20 inch prints taken with a Tamron 90/2.8 [or 2.5?]
> zoom
> The lens was a piece of stout plastic and felt and looked very
> > inferior compared to the Zuiko and Leitz lenses. Around here it retails
> > for 300 or 400 $Cdn which perhaps indicates that one does not get much
> > quality for the money!
>
> . Compared to similar sized prints I shot
> > > using an 85/2 on my my OM4T and a 90/2.8 Elmarit on my M3 the Tamron
> > > prints were just plain awful ..........overly soft round the edges and
> > > just not at all sharp. The visual quality of my Olympus and Leica prints
> > > were too close in quality to discern one from the other. Based on this
> > > limited exposure to the Tamron zoom it got a big failing grade.
> > >
> > > John Hudson
> > > Vancouver, BC, Canada
>
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