Multiplier not Autofocussing
Interestingly it used to work a lot better until Pentax issued a firmware update (some time ago) when they released their own 1.4x WR converter.
I have never got any teleconverter, bar the Pentax 1.4x WR, to autofocus reliably with SDM on Pentax bodies.
Thanks for pointing me in the right direction. I've tried it with a couple of slower screw drive lenses and it works fine.
it's just not happy on the SDM ones.
Phil
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850 posts
13 years
Woking
However, when I use it with any other of my fast lenses it works fine, i.e. it auto-focuses in whichever mode I have selected.
Any suggestions/thoughts?
Phil
My Flikr Page link