When i used it with my K200D and K10D bodies, i found that this lens was more than satisfying.
I purchased it in almost new conditions, and the performance of the lens, stopped down a little, proved to be good enough... at least for a "walking lens", used when i didn't want to take with me expensive primes, fearing possible loss or damage.
It's a fixed max aperture lens, it's light and unobtrusive, and the build quality is not that bad (excluding MF, which is quite bad, as with most AF lenses of that period).
So i took it with me on a long journey in SE Asia.
With my new (2nd hand) K-5 II, i'm less impressed
It is just 15mm longer (max focal) than a kit lens, and i found that the quality of the new WR kit zoom it's slightly better.
Looking for better quality lenses, which could match the better sensors of recent Pentax DSLR bodies, i decided to diversificate my "travel lenses" outfit.
That's why i purchased a Sigma 28-70 f/2.8 EX DF (better quality and better speed), and a Pentax 50-200mm WR (to use in bad weather, together with the kit zoom 18-55mm WR and a cheaper WR body).
Now i am free to sell the FA 28-70 f/4 AL, but i realized that:
1) there are cases when you don't want the bulk and weight of an f/2.8 zoom, but you'd like to have something lighter/smaller, and at the same time with a better quality than the kit zooms
2) for the kind of travel photography i like so much (street pictures and candid shots), a max focal of 70/80mm is not enough, but a long, bulky long tele zoom is sometimes too much; my Sigma Apo Macro 70-300mm is not super-easy to carry in a small bag, and too conspicuous to get unnoticed
If i sell the FA 28-70mm, i would like to buy a zoom with more extension, something like a 28-105 or 28-135.
I'm asking your advice. Which lens you'd buy?
I don't need a super-fast zoom, but image quality is a major concern.
Manageability and ease of use in MF come next, and power zoom would be a welcome plus. Macro/Close-up setting would be very welcome as well.
Price is important! I consider F and FA zooms only, cause they're easier to find at a decent price on Ebay.
Please don't give suggestions about MF lenses. Have a look at my signature, i already have plenty of them, some are even quite good (and many couldn't find a place on my signature tagline cause there are no characters left
A good AF is definite plus for the kind of pictures i'd like to shoot, and for the range of focals i'm looking for.
Other way i'd stick with the Pentax-A 35-105 f/3.5, which has been the workhorse used by my late girlfriend for long time, with full satisfaction.
cheers
Paolo