Originally posted by kamicota Thank you Uncle Vanya
Here we go - In order of Importance - Price, IQ, Auto Focus & Reliability,
Most of what I shoot are rivers lakes landscapes and a few in town & local attractions etc too.
What must be said here is that Post Processing is a vital part of where I focus on to emphasize the many colors of & in an image. Then it is off to the races so to speak where the processing leads to playing with emphasize artifax & Chromatic aberations etc while taking the image inot different types of painting effects.
Quite often resembling some of the Infrared variations & effects.
Cheers for years
Colin
If you set price first then iq then af and then reliability,
The Pentax DA 16-45, DA 17-70, Sigma 17-70 all come to the front of the list followed by the Pentax DA 18-135.
Just my opinion. The 16-45 has decentering and barrel wobble potential, is shorter but very wide. The iq is good but some CA is there but you can clean it in post. The DA 17-70 is very nice but sdm reliability is less than desired but also not as bad as some might think. Sigma has a good reputation, lacks Pentax Colors whatever that means, and is reliable. I have no direct experience with the 16-45 or Sigma 17-70. The 18-135 doesn't seem wide enough for what you seem to like.
Personally given the emphasis on landscapes and the color manipulation in post the DA 16-45 or Sigma 17-70 stand out. The 16-45 is likely cheaper.