Somewhere in one of the threads here in the Film section someone made mention of Fuji Reala film and I decided to give it a try in medium format. Just wanted to say thanks very much for the suggestion. Sorry these weren't shot with a Pentax, but I thought I'd share some examples of the results from the film.
Fuji Reala Ace ISO 100
Photos #1, #2, and #3
1953 Mamiya Six Model V folding rangefinder
Photos #4 and #5
1956 Ricohflex VIIM twin-lens reflex
#3 has no post-processing at all. The others have minimal contrast adjustment, "S-curve", and light USM applied. All are drastically reduced from 2400dpi negative scans (20~26 megapixels) done with a CanoScan 8800F.