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.
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I have never got any teleconverter, bar the Pentax 1.4x WR, to autofocus reliably with SDM on Pentax bodies.
Mike
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
K-5iiS; K-r; ME Super; ME; DA* 16-50 f2.8; DA 18-135 WR; DA 55-300 WR; HD DA 15mm F4 ED AL Limited; FA 50mm f1.4; A50mm f1.7; DAL 18-55mm; M40mm f2.8; + assorted non-Pentax lenses
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swarf
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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
K-5iiS; K-r; ME Super; ME; DA* 16-50 f2.8; DA 18-135 WR; DA 55-300 WR; HD DA 15mm F4 ED AL Limited; FA 50mm f1.4; A50mm f1.7; DAL 18-55mm; M40mm f2.8; + assorted non-Pentax lenses
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