I took family portraits yesterday and made the deal to give the family a DVD of the digital files. I trying to figure out what size the digital photos should be? Do I save them with an aspect ration of 4x6? Do I save separate files of each photo (4x6, 5x7, 8x10)? I like to do a little vignetting, but unless I save different aspect ratios, the effect would be lost if they cropped a 4x6 ratio to an 8x10. They requested some b&w and other special effects as well. Any recommendations?