Dylan777 said:
FE 16-35 is a good lens. I just didn't like how it fits on a7 body.
I went back and forth for quite a while between Sony FE16-35 and Canon 16-35 F4L IS, the latter with a bit better IQ at 35mm end and cheaper and the former with native AF speed on my Sony A7r.
Surprisingly, the size difference isn't much (well, more after introducing lens adapter), so portability advantage wasn't so huge with Sony lens.
I ended up getting the Canon 16-35, which is a tremendous lens, which I can use on my Canon body as well. AF on Sony A7r is as slow as usual, which I expected, but heck, Sony does have nice manual focus aids, and I'm happy I went with this lens..