Quote Originally Posted by Jed Freudenthal View Post
You are right, a high acutance developer will increase the micro-contrast, using the edge effect. This will give a higher perceived sharpness. However, it will degrade the image quality. In 35 mm you really need the increase in micro-contrast
That's exactly how I understand the situation.

Quote Originally Posted by Jed Freudenthal View Post
In 35 mm you really need the increase in micro-contrast, using the edge effect.
On this last statement, I disagree: a strong edge effect (as provided by high-diluted rodinal) may be disturbing, at least for me, specially with large prints. (that's why, in my opinion, the rendition of some nude photographs by Ralph Gibson looks better in printed books than original silver-prints).

I like PC-TEA very much because there is not edge effect at all, but it's also true that perceived sharpness with this developer is not always very impressive.