> I missed one opportunity to buy a K105/2.8. It seems that PDMLers > like this lens very much. [snip] When I use my macro lens for > portraits I'm shooting at small apertures to get greater DOF, so > bokeh is not that important to me since I'm looking for maximum > sharpness.
Not all of us like it that much, Aleksandar. I had one a few months ago but sold it after using it for a bit - I found that the bokeh was very harsh (and bokeh is very important to me). See: http://www.cetussoft.com/pentax/k105f28/ On the other hand, it did seem reasonably sharp (although I think that most 100-ish macro lenses seem to be sharper, even at infinity). So, since you say sharpness is more important to you than bokeh, it might be satisfactory for your purposes. Fred