Response to Controlling HP5+ grain...agitation to blame?

Marcel, when you see the change in sharpness depends on how sharp the image falling on the film is, when the film becomes the "weakest link". Usually, a slightly longer than normal lens is the sharpest in a manufacturer's line. If you're using an SLR you want to light with strobe to minimize mirror and shutter shake, use a middle f-stop etc. It might take 2 stops or more to see the difference in your case. Shooting resolution targets and viewing the neg under a microscope the drop in sharpnes with increased exposure is obvious. In real world shooting it's easily swamped out.

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