After reading reviews and comments here, I decided that I would buy this lens for myself for my birthday in October. The only lens I had wider than 24mm was my 10–22mm EF-S lens, which I couldn't use on the 6D2.
A high school classmate died suddenly a few weeks back. I decided that given the uncertainties of life, it made no sense to wait until October, when I could afford it no more or less than in June. (Admittedly, I'll use it more when the weather cools off, and I go out taking pictures more often.)
The lens lives up to everything I was hoping for. At 16mm it does have a bit of vignetting that shows up in ACR with lens profile corrections turned off. I've not taken any killer pictures with it yet, really more like tests, but they look good even if not great works of art.
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