Originally posted by Mr_Canuck No, you haven't made a mistake if you also want the tiny form factor of the DA21. It is better. It's also a trade-off. Depends on your needs and interests. It's just not a blowout by any stretch, which speaks to the value of the 18-135. The flare treatment of the 21 and some other factors can also make it pretty special. Another thing not mentioned here is it has a very close focus distance. Not a macro but very much a close up lens.
With regards to that, if you're carrying the DA* 60-250 as your main lens (or any 70-200) , and you're looking for a couple of light compliments, having the 21 ltd or 40 XS on your K-01 is a great (just in case you see something wider) combo.