Originally posted by wed7
the 21 is sharper from my screen here, tfs!
Remember these are only rough and ready hand-held tests. I think that difference may have something to do with the slightly closer focal distance, and hence the shallower relative depth of field. it possibly also affects my subjective impression about bokeh quality. I will need to repeat the comparison with a tripod.
My DA 21 limited is pretty sharp across the frame at f/5.6, whereas my HD DA 20-40 limited at 20mm still has ordinary corners at 20mm and f/5.6. At the long it is good from the get-go though