Ditto. I've been having fun this past year with the classic Quaker Oats DIY pinhole camera. Not to brag, but my first results were so sharp that I was almost disappointed (I was specifically hoping for something soft, artsy, dreamlike). For example: http://www.flickr.com/photos/35166624@N03/4093582101/
So your saying that image was not sharpened? I sharpen most my pinhole images after being scanned. Have not had the chance to enlarge and print in the traditional way yet.