?Apple has done well with Aperture 2.0, based on my test of ingesting and editing a batch of my own photos on a dual-core iMac,? remarks Stephen Shankland in a recent article on CNET. And, he points out, he?s not the only one to notice the dramatic performance gains: ?I feel like someone snuck a new CPU into my machine,? gushed photographer Josh Anon in a Wednesday blog posting.? ?On top of a general performance boost,? Shankland continues, Aperture 2 delivers ?a new preview mode that specifically emphasizes speed,? an entirely ?new raw-processing engine? that delivers significant advantages, and a variety of other new features, as well.