I use both the Tamron 7 element 2X AF model and 1.4 XL Pentax with my FA
*200 f:2.8. I don't really notice a loss of sharpness as much as a slight
change in contrast. This only occurs with the Tamron. The 1.4 XL does a
great job and other than a loss of AF, I don't really notice it is on. I
believe that the FA 300 f:4.5 cannot use the XL converters because the rear
element would get in the way of the snout on the converters. You will
either have to use the XS converters or try a Tamron, Tokina or Sigma.
Bruce Dayton
Sacramento, CA
----- Original Message -----
From: "Chris Brogden" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, April 22, 2001 10:30 AM
Subject: Re: Teleconvertor suggestion
> On Sun, 22 Apr 2001, Kelvin Ang wrote:
>
> > On the note of teleconvertors... are there any hints on how to choose
> > a good one? Are 3rd-party teleconvertors good enough? The original
> > Pentax teleconvertors are indeed rare over here in Singapore.
>
> I haven't done any serious testing, but from what I've seen I'm quite
> happy with the results from Tamron's 7 element AF teleconverter. Just
> stay away from their 4 element one, unless money is really an issue.
>
> chris
>
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