|
I can't speak for the Pentax 17-70, but the Sigma is a super lens IMO. In addition to that lens I also have the Sigma 10-20, the Sigma 70-300, the Bigma, the Sigma 30mm f/1.4 and the Pentax 50mm f/1.4, and at least 95% of my photos have been made with the 17-70. With a constant f/4 I really can't see how Pentax can achieve much of a market with its lens. I only wish that someone would come out with a constant f/2.8 in the same focal length range.
CN
|