Originally posted by twitch But isn't it the same for all lens makers, what makes Pentax lens unique that they score badly?
They don't really - most of them score similar IF you choose the same sensors. When viewing on FF sensors like the 1D, the CaNikon lenses show much better performancce (resolution).
Another thing is that in their reviews/comparos - they like to weigh against Pentax. For example, for the DA 40, they'll compare it against the 60mm macros. Completely different lenses, and very different performance of course!
Pentax also like slower lenses (DA 21, DA 70, DA 15) that perform wonderfully but are slow. There aren't really any equivalents from CaNikon and so that causes the comparos to look even worse for Pentax.