Jon, I just did some super exciting brick wall testing. My sample of the Z14-30 is a little better all around than my AF-S 20 f/1.8G at F/8. 16mm is still pretty good. 14mm gets noticeably softer at the far corners, but it's not too bad. The 12-24 is likely consistently a bit sharper on the edges, but Kolarivision says the 12-24 isn't good for IR.
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