So what about your photography Bob? You're not a perv but it is explicit enough that someone could get excited from it. Sometimes just the suggestion of sex is enough for some people. It doesn't take much to get a fantasy started in anyone's mind, provided they see something that typically stimulates them.The law doesn't require the photographer to be a perv, just that someone gets excited looking at their work.
But that wasn't the original intent of your photography. Yet someone else can get excited by it and that makes you a perv?