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Hello guys! For those of you who use Pentax 645d or 645z along with your Canon to shoot outdoor portraits, what do you think about the image/bokeh quality produced by lenses for 645 system? I got some idea from the article by CR member Chris Giles (wockawocka) http://chrisgilesphotography.com/blog/pentax-645z-review-pt3-ccd-vs-cmos/ but I want to hear some other opinions as well, especially in relative comparison to Canon 85 f1.2, 135 f2 and 200 f2.0. Thank to you all.