Ok. This could get me banned.
I came from pentax land. Still use my k10d and 43 limted too..
I have the tokina 35mm f2.8 macro.... which is the same lens as the pentax 35mm limited (I have owned both).
Here is a shot on a canon 1ds (11mp FF).
(and yea it doesn't quite cut it, and yes there was lots of vignette correction, but still!)
Here are a few of it mounted on a 1d mkII (8mp 1.3x crop)
pentax, you make great glass. I need a FF from you!!!!
(ok, does that last line keep me from getting banned?)