Thanks Vivek for the info re the pen f lenses.
I have used film M's and the film R's for many years.
In the R's I have most lenses from fish eye to 180mm - lacking the 28mm, 80mm. I also have the Schneider 35mm 3.5 shift. At last I will get a digital camera to use them. Upgrading from a Nex 7.
Thanks for all your insight.