Digital BW, The Print

I recently tested the demo version of Shortcut PhotoZoom Pro and was
impressed with the results. 

It lets you choose between many different scaling algorithms. S-Sline was
the best for digital images, but some of the others were better for grainy
film scans. S-spline appeared to sharpen the grain too much.

It did a really good job keeping edges sharp even in very big enlargements.
Some rounded edges still showed hints of pixelation but most were good.
Details and textures looked less pixelated than normal upsampling. 

It has a function to add artifical detail, but I'm not sure how useful it
is. It seemed to add texture to random parts of the image.

You can find the demo on their web-site:
http://www.trulyphotomagic.com/

--
Daniel Staver
http://daniel.staver.no