Originally posted by Adam I don't know why Pentax is so shady about this matter- when we interviewed them, they only said that "each system serves a different purpose" and that the DC system is for budget lenses. Even that doesn't make sense, though, seeing that DC is more reliable and faster (even if it's only because of the rear-mounting). I would definitely like to see more DC lenses.
Well not fully.
first off reliable.
There is only one lens with DC and yes there the DC works really well without fails but if we look at DA* primes we can say the samething with SDM so how much value can we give to that?
There are more lens models that have reliable SDM then there are lenses with reliable DC for example, it's just how you approach the matter.
Faster.
Same as before DC only one lens, the AF speed various with the SDM lenses so hard to say which one is faster.
Why the DC for budget, that's quite simpel. DC is not power full enough to move the bigger heavier elements and seals with the DA* lenses.