I was wondering if anyone here has any experience with the sigma 30 mm 1.4. It would be used on a 7D. I'd be using it for shooting inside, just family gatherings, etc that my wife wants pictures of. I have the 24-70 2.8L, but I still feel that is limited by f2.8 inside and that the 1.4 would be a big help. I do have a flash that I can bounce, but I'd really like not to bounce flashes all over the place at gatherings such as Easter dinner I've read about the AF issues, and I've never owned a sigma lens before, but this one has me intrigued. Any opinions on it, preferably on crop body as I'm trying to get a 50 mm equivalent on a FF, but I'll take opinions regarding IQ and AF, etc, from anyone! Thanks!