Hello, I was previously using an RZ67 w/ 110mm f/2.8 lens and it was brilliant, I could take neck-up shots and focus on the eyes with no problem. Now I am interested in purchasing a Pentax 67 since I had to sell my RZ67, and was always fascinated by the 105mm f/2.4 lens. Further research into it is quite disappointing as it seems I cannot use it to for close portraits due to its 3.25ft minimum focus distance. Does anyone know what I can do? I read the 90mm is about 2.25ft MFD so that would allow tighter shots, but I also read that it's bokeh quality is not as foggy and smooth as the 105mm's so that's unfortunate.
Do extension tubes diminish image/bokeh quality at all, if I put one on the 105mm?
Example of how close I want to be:
http://i.imgur.com/uDcbw2r.jpg