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Forum: Pentax SLR Lens Discussion 05-13-2016, 04:19 AM  
K1, K-mount and Samyang autofocus lenses
Posted By Snappertim
Replies: 10
Views: 2,400
Samyang produces the 85mm with the A setting on the aperture ring so either they have paid for this, or its part of the open platform of K mount, to autofocus the lens is in engineering terms not that hard, as almost all Pentax primes are screw drive and Pentax do not seem to want to abandon that system, all that is needed is a screw coupler in the back of the lens and a drive bar to the existing focus mechanism, this would not infringe Pentax copyright I think, as this is the same as everybody else's screw drive system.
Many "good" autofocus lens for Pentax are still out there, but although the K1 is said to be for existing customers by some, anybody looking for a full frame DSLR system would be mad to overlook it, so the number of lens on the used market may decline, I think this may already be happening as many of the more exotic optics have disappeared already, and other are now much rarer than previously,
The skinny cow of K mount is in fine health as she was designed with the future in mind, and if a APSC ICLC appears in the future, why would it have a different mount, and milking the skinny cows of AIS for Nikon and EOS for Canon have paid dividends for them for decades.
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