Fraser
Well-known
I picked up a Canon 50mm EF 1.8 mark 1 a couple of days ago have been using it on my 6d all weekend and I'm very impressed. I had the mark 2 version a few years ago but only really used it on film. Since its the holidays! and I had a bit of time this morning decided to test my new £50 lens against the other 50 lenses I had kicking about.
6d with the 50mm 1.8 @1.8
3_6d by f4saregreat!, on Flickr
1dx with 50mm 1.2 @1.8
3_1dxd by f4saregreat!, on Flickr
d700 with Nikkor 50mm 1.8 @1.8
4_d700 by f4saregreat!, on Flickr
and finally M9 with 50mm Summicron @f2
1_Leica by f4saregreat!, on Flickr
all cropped from this
15fbpicwholepic by f4saregreat!, on Flickr
6d with the 50mm 1.8 @1.8

1dx with 50mm 1.2 @1.8

d700 with Nikkor 50mm 1.8 @1.8

and finally M9 with 50mm Summicron @f2

all cropped from this

Archlich
Well-known
Almost all 6/5 standard lenses are time-proven and sharp in the center wide open.