... But controlling a neg like that one is pretty easy if you learn masking. I also once concocted a pyro tweak that prints using the stain only - no visible silver image - yet doesn't need bleaching the silver out. It worked wonderfully. But then there was a subtle change in HP5 that wouldn't allow it to work. I gave up on rotary PMK a long time ago. There are better pyro formulas for that. I always do sheet film in trays now - way more control over contrast. Or you could just gently roll your Jobo drum back n forth in the sink bed. The Jobo processors run at just way too high an RPM for some applications. I complained about that to them decades ago and then built my own personal machines instead. Pan F is an odd duck and I recommend it only for subjects with a modest contrast range similar to what color transparency film might handle well; and you need a different ratio of A&B PMK for it. It does have wonderful "wire sharpness" in terms of edge effect in pyro, but different than HP5. Of course, Pan F is extremely fine-grained and can be enlarged more; but then, the biggest size you can obtain it is in 120 roll film, so it's not going to help you make large prints anyway, if that is what is in mind. But a med format SLR might be nice for microphotography.