RE: Quality of pentax teleconverters.

[Alan Chan]

If K200/2.5 takes A1.4X-L or A2X-L, they are the best option. If not, 
A1.4X-S is the next best thing. F1.7X has plastic body which might not be 
able to withstand the weight of 1kg.

Alan Chan
http://www.pbase.com/wlachan
 Right now I use a Sakar 1.7 teleconverter and its not
horrible but I wouldn't mind upgrading to something of
better optical quality.
 I've been looking for one the well regarded
kenko/tamron pro ones but they are pricey and hard to
find in pentax mount.
 What are the pentax ones like for optics?
 I'm especially interested in the 1.7X F AUTO FOCUS
ADAPTER so I could use that with my K 200mm f2.5 and
end up with an auto focus 340mm f4.25 that will
autofocus.
 Also the A 1.4X-S and A 2X-S.
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