I had a 50mm f/1.8 MKii & just picked up a minty MKi at almost the same price as a new Mkii. What a great deal I thought.
As soon as it arrived and inspected the optics I posted the Mkii for sale (which lasted a few hours) & mailed it out this morning.
Now after playing with the Mki I've noticed a few things.
Build: Definately better. Not only the metal mount but the body feels more rigid too. There is a little more weight to it, but not much.
Optics: A few test shots I'm happy with the IQ. pretty much the same as the MKii...sharp but with a funky bokeh that you get with a 5 blade aperature.
Autofocus: This is the question that's popping up. Is it me or is the focusing noticably slower than the MKii? I can't do a direct comparision under similar conditions b/c the Mkii is already out and shipped.
I was using the 50 f/1.8 MKii on a 5D I remember it being pretty fast. Haven't used it on my 40D though.
Now with the Mki on the 40D it just seems slower. Does anyone have both that have tested the autofocus directly. I've always heard the MKi is slightly slower but not this feels more noticable.