Bought a Nikon myself even though I shoot on a Canon, better manual focusing (although still nowhere near smooth sadly) + manual aperture Cheesecake!
My next one is a 35mm 1.8 I don't have full frame camera so this will be more like a 52mm. was going to go for a 50mm till I read it would be more like a 75mm on my camera
Yeah I bought the Nikon 50mm for my 550d I mainly use it for video, the Canon 50mm manual focus sucks much poop.
With an adapter yes, but you loose auto-focus and have to set aperture manually also - there is no electronic link between the lens and camera to allow the lens motors to do it for you.
I seem to have bought a fairly crappy adapter too, went on the lens fine and fits the camera perfectly but I can NOT get it off the lens Manual aperture doesn't bother me, I use a lot of old manual lenses anyway. The main reason I went Nikon over Canon is the wider (and much less wobbly) focus ring. And the fact it actually has a focus ring, as opposed to just twisting the end of the lens. No real other differences as far as I'm concerned. Also a little bit because someone had it in the marketplace for like £40 brand new... If you're buying it for stills and have a Canon body however absolutely get the Canon version, lovely and sharp and for stills at 1.8 auto focus is definitely handy.
The Helios is beautiful, I have a 44-2 myself and the bokeh is delightful, you get a really nice swirl effect in the correct conditions. It's a little long on my 400D, but I also have a Chinon 35mm f2.8
