Brushes

iPhoto can shows you the strokes for the localized adjustments, which is nice, but overall I'm not really thrilled with the results. For instance, desaturate doesn't accumulate, it just does it at a single intensity, for the first stroke. The Repair brush looks like it simply blurs. And for operations like soften and sharpen, it's hard to see any effect at all; that may be different on the higher-resolution iPad.