I like to have more control in the sharpening phase of the process when I am going to submit a file for printing. Currently I do all my adjustments in lightroom(adding vignette, and cropping) export to a cr2 file, open in camera raw, check to make sure it is set to 300dpi and than open in cs3. Am I wasting a step (trying to preserve any losses)by exporting to cr2 instead of just exporting to a psd file and working with that in cs3??