Originally posted by sterretje Just because the new FF camera has KAF3 doesn't mean that it doesn't have KAF2, KA, etc.
My K-30 has KAF3 and still has the screw drive.
I did mention this a while back when Pentax brought out new DC lenses (16-85mm DC WR), and more recently 18-50mm DC, that Pentax will join the motor-in-lens club.
I personally don't have any issues with screw drive lenses (very tough, last forever, and you'll replace the body before the lens).
I do suspect that existing LTD and very small cameras will keep the screw drive, as it may be next to impossible (or very expensive) to implement.
That being said, I did bring up a couple of thoughts - and now that FF is becoming a reality... this may actually occur:
1. 'Entry' level camera may come w/o screw drive - this will allow the cost to be 'less', but put camera owners in the spot of 'new DC only' or pony up a little more for one that supports screw drive and legacy glass
2. 'Mirrorless' level camera may come w/o screw drive. As these tend to be smaller/lighter/trendier (quieter) similar to a P&S, I expect this to occur.
3. All new DA zoom lenses may be DC only. As the 18-50mm DC 'may' replace the 18-55mm WR, do we see a trend in zooms ?
4. I don't expect much change (if any) in existing LTD primes. If anything, I'd expect a change from SDM to DC on 50-135mm and 60-250mm for 'reliability' reasons