Pentax lens prices didn't drop at the release of the *istD. They were already on the way up. And I think the *istD and D70 were released at about the same price. Nikon eventually had a fire sale on the D70 because they didn't have a price leader.
> Mark Erickson wrote: > > Seems clear that prices for certain used Pentax lenses have popped up quite > > a bit in the last year or so. Do you think that prices are higher to stay, > > or is it a bubble (like might be happening in the housing markets in the UK, > > US, and Australia)? Thoughts? > > My feeling is that prices of used lenses were low due to people > switching systems back when the *istD was an expensive competitor to the > 300D and D70. When the *istDS came out with backwards compatibility > with older lenses, prices went back up again. They'll stay high for as > long as (a) new Pentax primes in the same ranges are scarce, and (b) > K-mount DSLRs continue to sell well. > > S >

