It's true that overdevelopment will sometimes yield an apparent increase in sharpness, but if you look closely, you will see fine detail is actually softened. Edge acutance, at a glace, may seem better, but that is an illusion, too. Increasing the contrast by development or increasing print filter number deteriorates image resolution.(posted 8179 days ago)For N-5 processing I used a catechol developer I formulated; I use 50% the normal amount of reducing agent and 40% of alkaline (activator), this coupled with greatly reduced agatation: 1 minute to start, then 15 seconds every 2 mins for the first 4 minutes, then 3 minute intervals, then 4, then 5 minutes for a total time of 32 minutes. Normal processing time for this film and developer is 11 minutes with normal agitation.