Originally posted by Class A No, the Pentax version should be cheaper as it is lacking the OS mechanism of the Tamron.
In what world does one pay more to get less?
This is not to say that IBIS is worse than OS, I don't believe that for a second, but part of the beauty of IBIS is that it allows simpler lenses.
I understand the "economy of sales" argument but the same argument applies to cameras and Pentax manages to produce bargain offers here. It may actually be a "mixed calculation" model where cameras are sold at super attractive prices to reap in the money on the lenses.
Here is to hoping that the initial pricing for the 2.8 zooms is not going to last forever (I understand it already moved a bit) and that Pentax will be able and willing to support more attractive lens prices in the future.
I thought the Pentax version probably had the OS mechanism, it was just locked into place and not enabled for the K mount version of the lens.
That said, I don't see any way that the Pentax version of the lens could be cheaper than the Tamron version of the lens. Assuming Pentax has some sort of mark up and distribution costs, it wouldn't make sense that they could price it less than the Tamron versions.
Be that as it may, probably the biggest thing is that Pentax has a certain number of units a year that they want to move and clearly they are doing so at current pricing. If sales slow enough, they probably would consider some reduction in price, although I doubt it would ever be cheaper than the Tamron 15-30.