Originally posted by bob13bob you are correct. I adjusted my statement. Taking another look:
at f1.8 I would prefer canon
2.2 to 3.3 I would prefer pentax
3.5 onward prefer the canon.
no taking bokehs in to account, give the penax used price is almost 400% canons, data points to clear winner. What am I doing wrong here.
Pretending for a moment that everything is equal, I would say, "prefer for what purpose"? For example, at f/4 the Canon has higher center sharpness, whereas the Pentax has higher edge sharpness. So if I had access to both lenses, maybe I would use the Canon to take a photo of my cat, while the Pentax for a landscape shot.
As far as prices go, yes, Pentax has a hole in their lens lineup for a new cheap 50. Comparing apples-to-apples, though, a Canon 50/1.4 is $400.
Bokeh is tough to quantify, because some people care very much about bokeh, some don't. It's subjective, because people find different kinds of bokeh pleasing.