Re: How Prevalent is Nude Photography....
"I'm pretty sure the second ever Daguerreotype was a nude, the first being a test shot for the lighting."
Go back further. Clerics in the church in Italy commissioned paintings of nudes for their private apartments - usually kept behind curtain drapes. Early sculptures were nudes. It was the Christian cultures who retrospectively added figurative fig leaves to classical sculptures - or even broke off the bits that offended*** them.
***turned them on