That doesn't matter, if you have pictures of nude children that so happens to be not your child, the Federal statues states that it's a violation to manufacture or even possess such images of nude children other than your own child in the privacy of your own home (i.e. scrapbook and what not).
My advice for everyone is to consult an attorney that specializes in child pornography laws. I think you'll be quite surprised how conflicting the law is towards backscatters and that the Feds is ignoring the law that they passed in the first place.
Yiz
