I am very pleased with this lens. Sharp all over the frame.
I've been using the EX 4-5.6 10-20mm for some years. Actually always on
the K-3. But the new 18-35mm is MUCH sharper - not only in the centre,
but all over the place. Man it's nice. It is even possible to buy a
USB-doc in order to adjust focusing.
Very good for panoramas too:
https://www.flickr.com/photos/bladt/15952210569/
https://www.flickr.com/photos/bladt/16137546972/in/photostream/
I guess It's my standard zoom lens now :-)
Regards
Jens
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