First off, the Bessa III continues to astound. Over in Film SLR there's a RF thread - in my opinion, though the Leica/Ikon argument has merit, going with a modern (and I consider anything from the 1950's to today 'modern') rf folder is the way to go.
Sharpening - our scanners need help! I've settled on a frequency/radus/% approach - by frequency I mean the, what is that third slider called, the thing that says how many pixels to look at for the sharpening effect? Threshold! yes- the larger the Threshold value the 'lower' the frequency of sharpening.
I start out with the controls set (usually) to .2 at a threshold of ~15-20 and 180% as this is my normal 'finishing touch'... but the setting is useful in determining the first low frequency sharpen step. I slide the radius up, depending on negative, to 3-7 pixels - with the other two settings as is, a lot of artifacts show up. I then move threshold up until the edge artifacts start to disappear - usually this is 40-60 or more pixels. Finally I slide the % down to ~60%, looking at both the close up window and the overall pic. Doing this helps with local contrast.
Next I do a similar step but with ~1 pixel radius, usually with a somewhat lower threshold and higher %. Again, I'm looking at edge artifacts. And the finishing touch is the .2/16 threshold/ 180+% sharpening.
I do this with a full size scan, in 120 usually this is at 1200 DPI, with 35mm it's 2400. After saving this, I resize, for flickr to where the long dimension is at least 1300 pixels. This is so that flickr creates the 'large' 1024 size image I'll post here.
A result of this process, New Portra 160 in a Bessa I Vaskar from the '50s: