I agree with David, digital cameras are not more accurate than regular cameras.
Price also doesn't have much to do with it, a $200 digital turns my "black" callas red, as does my >$1000 digital SLR.
I guess photos are only as good as the photographer, ha!
Recently someone on a plant list (I thought it was this one) gave a link to a website which discusses why it's so hard to take a photo of certain plant colors, it has to do with light absorption or some such thing.
susan