Hi Cor,
OA and PF+ is one of my favorite combinations. A good starting point is:
OA 1:500, 70F, 8:00, agitate first 30 seconds, and then ten seconds/ minute.
The above should provide a point of departure for your own testing.
John,
I'm happy to share my work with other photographers, and I hope you find something useful in it.
Bookmarks