----- Original Message -----
From: "Julian Davies" <julian_davies@xxxxxxxxxxxxxx>
Sent: Saturday, September 07, 2002 10:54 AM
Subject: Re: [OM] Tamron vs. Zuiko
> At one time a UK retailer (can't
> remember which) used to MTF test every Tamron before sale, and the price
> reflected the result...
Are you thinking of R.G.Lewis of Holborn in London? Back in the 1970's they
used to test ALL lenses that they sold, and their prices reflected that
(about 10% more than other shops, if I remember correctly). I bought my
first two Zuikos from them, and I still have one of them (the 75-150 zoom).
Initially R.G.Lewis tested lenses using film and test targets, and assessing
the result in terms of "lines per millimetre" (or possibly "line-pairs per
millimetre"), and that is how my lenses were tested (I still have the test
negatives for the 75-150 zoom). Later they obtained an MTF machine and used
that to test lenses. Later still they discontinued this practice.
-- from Cy in the UK
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|