On 21 Apr 2001, at 22:53, Bob Keefer wrote:
> Hi all:
>
> I have the Pentax 2X-S teleconverter, which frankly doesn't produce very sharp
>images with my FA*300/4.5, not even locked down into the tripod with careful
>technique. (I get better slides with my son's Canon 300/4.0 with a Canon 2X. Sorry.)
>
> Anyone know whether the 2X-L would be any better?
>
> Also, any thoughts on the 1.4X-L?
Hi Bob,
I don't believe that either of the X-L TCs will couple successfully with the lens
in question, the front elements of the TC protrude quite a way from the mount
flange and require a recess in the rear of the lens to which they are fitted. I
have found the 2X-S to be a good performer however I have not coupled it with
the lens that you mentioned.
A question about your problem; are you stopping down the lens at all? How
does the combination perform stopped down a little?
Cheers,
Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
Fax +61-2-9554-9259
UTC(GMT) +10 Hours
[EMAIL PROTECTED]
http://www.ozemail.com.au/~distudio/publications.html
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