Pentax SMC DA 17-70mm f/4 AL [IF] SDM - Review / Test Report
16 December 2008
Conclusion: The Pentax DA SMC 17-70mm f/4 AL [IF] SDM is undoubtedly the most desirable standard zoom lens in the current Pentax lens lineup. The resolution characteristic is very good without any significant weakness. The vignetting and distortion are about average for a lens in this class.