When I use anything wide, I get horrific perspective distortion. I look at other people's pics and the metadata says they're using ultra wide lenses but they have no noticeable distortion (straight horizons). I try to stay level with what I'm shooting, but it never fails. I try fixing in post, but I hate losing half of my image during the straightening process.
Am I doing something wrong?
I get this using my Rokinon 14mm, my Canon 17-40L, and my 24-105L (at 24).