I'm considering getting a fisheye, as we're getting a puppy, and I think I can have fun with the combination.
I literally LOL at this. I don't know quite why, I like my FE, but this sentence just tickled me.
Sorry....had to share. I'm going to be in a boring meeting tomorrow and suddenly crack up at the thought, I just know it.
Anyway, FE can be useful for a lot of things, I hope you find a lot more uses for it as well because I think it can be an interesting lens. I also agree that AF is not needed as much as with other lenses. But as with everything wide, you often want to get really close. It is possible to not nail focus. It's also easy enough to get focus close enough by eye, even at f2.8.
Not great shots, but just to prove you can get to see if FE have good bokeh or not (f2.8 on FF).
Wife: we should get a puppy.
Husband (thinking): how can I get a new lens out of this?
Husband: OK, but I'll need a fisheye to take cool photos of him/her.
LOL. Yeah, it's a pretty funny thought process I had, but you know puppies with a fisheye make for fun photos, especially if you can put a silly hat on the puppy. At least that's what my daughter is saying!
I have the Sigma 10-20, so I know I'll be getting up close and personal with the pup with the FE. I was thinking the Sigma would probably do what I want, but as you said, it's also an excuse for a new lens!
Amazon has the Opteka 6.5mm with removable hood for $180 right now. I couldn't pass it up at that price. Should be a fun lens!