I had a quick look and couldn't find an answer to this question, which is probably because it's a silly one. Anyway, I got an A7 today after trading in my Canon 60D and a few lenses. However, I still have my EOS M and some EF-S lenses which I use on it with an adapter. My question is can I use EF-S lenses on my A7? I believe there's a crop sensor mode available or if I used it on full frame it would result is some significant vignetting. Has anyone got an suggestions on cheap adapters? Thanks!