I love this lens! I hooked it up to my a7III and sometimes use it on my a6500. Sure, it's not Zeiss glass, but you'd have a hard time noticing much of a difference at such an ultra-wide angle. Incredibly practical, with a huge field of view (10mm, full frame!) and a very handy zoom. There are a few minor things, but just so you know what to expect (no big issues): 1. The focus/zoom/iris rings are quite small and stiff. 2. The click-off switch is a little difficult to operate and feels uncomfortable. I had no issues with it, but I just don't feel like it has a nice, smooth ride. 3. Some of the rings (especially the zoom ring) gave off what looked like grease/fat(?). I was concerned that the fat might end up in an unwanted spot in the lens, but no problem so far. Of course, this lens is NOT weatherproof (at least I don't think so, and I will never shoot it in rainy weather). All in all a really good full frame ultra wide zoom at a great price.
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