| Yeah, the constant aperture is a big factor for me, as is the weather sealing, but the better range of the Sigma cancels that out. If the Pentax was a 16-85 then it would be a no brainier for me, but as it is it's just a very attractive lens, and obviously better than a 18-55mm, but not it's still not ideal. I'm basically looking for a good walk around/travel lens, but I also want good IQ and low distortion (get tired of fixing that in post processing), so that rules out the 18-2xx's.
As far as SDM; Sigma HSM = Pentax SDM, so that not a factor for me. |