Don't laugh - I know it is sacrilege to ask about a zoom for a K1, in the age of primes
Currently I have a K3 with the Pentax 16-85 and find it really brilliant. The combination wasn't cheap... but I can carry it easily, it is really ergonomic, and it does over 99% of what I shoot, which is basically "landscape" work, both on the ground and from a light aircraft.
I am done with the stage when I carried a bag with 5 lenses, 25 rolls of film and an OM1 / OM2SP / OM4Ti
So I really value the K3 solution.
It is also clear that a given overall diameter lens (say 80mm) will deliver a better image quality onto an APS sensor than onto a FF sensor. Hence there seem to be no wide range zooms for the K1. There is only the Pentax 24-70mm f2.8 HD FA ED SDM WR which has half the range of mine.
Is there some 3rd party lens which gets close to the 16-85?
The main reason I am looking at the K1 is for its better stabilisation over the K3. This is important for airborne shots, when you can't get a solid platform and high shutter speeds, say 1/3000, are just an illusion, due to the 1/180 shutter and the variable width slot system which all DSLRs use. I don't need more megapixels.
Sure the solution to a limited zoom is to waste some pixels and crop it, but one of the advantages of a zoon is that one can spend that much less time in Lightroom
Any tips much appreciated!