Sort:  

Yeah, I see. Well I didn't even bother to google the equipment, my bad. Thanks for being cool and explaining that. But, in that case, if you don't mind, if the lens doesn't communicate w/ the camera, that means no autofocus, is that correct?

True! You have to set focus manually. Hard work. This lens is for zen-buddists only. :)

Hard work indeed. I'm so bad at manual focus...it's incredible :) Thanks for the explanations @zhitkov, I'll definitely pay closer attention to your feed :)

Manual focus is not big problem. The most important thing in this case is good eyesight! :)