I don't recall any comment that the woman's backside is an "object of prurient interest." Perhaps I missed it. Can you show me where that was said. You seem to be putting your own spin on the comments made by others. Most comments seem to indicate that the composition is poor - you even said "It's not a particularly artful composition..."
Shel > [Original Message] > From: Paul Stenquist >To me, a fully clothed backside is not an object of prurient interest. > And if it has nice form, then it' makes the picture that much more > pleasant.