Legal comment
Sorry...I have now given the link to the case in question. But maybe there is still some confusion as to how someone can be found guilty of an offence if they're "not a paedophile".
That is, quite simply, because the law is "strict liability" and makes you guilty irrespective of intent. That is one of the legal professions bugbears about a lot of New Labour legislation: the argument for drawing laws up this way is that it makes conviction easier and the argument against is that it, er, makes conviction easier.
If the good Dr P took photos that a jury considered to be of an indecent nature, he is guilty of an offence...irrespective of whether he has been 100% chaste for the past 30 years and never in his life looked in a lewd way upon anyone under the age of 30.
Ditto for (statutory) rape. Not being aware that the victim was under 16...even if they lied to you... is not a defence...though it may count as mitigation when it comes to sentencing.
Basically, it all comes down to the social values we apply to these sorts of crime. If police had to show intent beyond reasonable doubt in paedophile cases, there would be far fewer convictions, and some individuals who definitely are paedophile - possibly even dangerously so - would be let off.
By going for strict liability, it is likely that some individuals who have no paedophilic intent will end up being convicted of a related crime, and branded as such. I have no idea how big the grey area is: and anyone who can draft a law that better takes account of these opposing issues would be a genius.