Originally posted by Smolk I thought long and hard about an offer for a used KP with the 20-40 for € 1,000. Attractive as it was, I heard that the zoom is not that strong at the 40mm end. In fact, rather weak. Users do not report this, at least not in a dominant way.
But user reviews tend to be fuelled by psychological motives anyway.
I wanted that KP but not so much that lens, and passed.
You were reliably misinformed.
Check out the Lenstip/Optyczne reviews of the DA 40 vs. the DA 20-40. The zoom at 40mm is best at f/5.6 - f/8, also the sweet spot on the DA 40 Ltd. And both center and edge, the zoom scores better than the prime.
There have been some bad copies of the zoom out there, but I've been very pleased with my copy, which has been earning its keep as my main APS-C lens for more than seven years now.