Aperture / Detect Edges and the Shift Key
I wrote an article a few weeks back for ApertureExpert on the Aperture brush edge detection and a nifty little trick with the Shift key. Bigger news was afoot in the Aperture world and the article was just posted today.
For those of us still using Aperture for the next several months, have a read. Using Shift and Detect Edges is good to have in your adjustment arsenal.