Pentacon Six framing solution...

The last 2 Pentacons I bought were for parts only , one is back to fine working condition , the other needs work to a curtain tab . But as has been said , the curtains
seem quite robust . The Kowa lenses are getting up there in price , the 55,85 and 150 seem the most affordable and available . As an aside here , if you scan your negatives
for the net , the Kowa negatives don't need to be rotated and one can get a higher resolution scan of the same size negative . The turning of the scanned negative seems to end
a higher megabyte count and may not fit within some forums maximum size for posting . Peter

Check out "Mr. Pentacon Six" and his extensive website. Covers about every lens ever made.

www.pentaconsix.com

That 180mm f2.8 is magic. It literally is one of the best lenses I've ever used, VERY sharp with buttery smooth bokeh. It really is a reference lens for a tele medium format lens.