I assume there's a motor in the adapter (drawing power from the camera). The first two pictures (the lens-facing side) show a screw-drive shaft, and also the two contacts that could provide power and digital signals for newer AF lenses, and may even provide power for power zoom lenses! I'd guess there would also need to be a microprocessor to translate between the various signalling protocols, but that's not going to add a whole lot to the cost.
On Sat, Jul 24, 2021 at 06:50:45AM +0200, Alan C wrote: > How on earth is screw drive AF possible? > > Alan C > > On 23-Jul-21 09:43 PM, P. J. Alling wrote: > > I've never seen one so expensive before, but then again I've never seen > > an adapter that also adapts screw drive AF either. > > > > I kind of doubt that you'll find anything cheaper that actually will > > auto focus a K mount lens on a mirrorless body.?? You'll be buying about > > a third of the working bits of a K-70. > > > > On 7/23/2021 3:33 PM, [email protected] wrote: > > > To use my lenses on an e-mount body is there a less-expensive yet > > > full-featured adapter alternative to the Monster? > > > > > > https://www.bhphotovideo.com/c/product/1627137-REG/monster_adapter_la_ke1_pe > > > > > > ntax_k_to_sony.html > > > > > > > > > > -- > %(real_name)s Pentax-Discuss Mail List > To unsubscribe send an email to [email protected] > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to [email protected] to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
