Originally posted by house I'm done when/if I get the dfa21.
But then again... the dfa100 is great size and fl wise but that CA is a real and troublesome issue despite what blind Pentaxians think. So maybe I'd get a better short tele if offered. The dfa85 is to big for me.
I get on perfectly well with the DFA100, and I'm not blind (a little short-sighted, but only optically
). Yes, CA can rear its head in certain situations, but as with any other lens, it's just a case of knowing how to use it to its strengths. It also depends on your intended use case. When CA is present it's minimal wide open (where you might use it for portraiture), worst at middle apertures, and low at small apertures (where you'd use it for macro work).
You might get on better with the Tamron 90mm f/2.8 macro. It still suffers from CA, but it's at its worst wide open and gets gradually better as you stop down.
Both lenses are excellent. A competent photographer will work around the minor limitations and get fantastic use from either one...
But I digress, as this thread is about the DFA21