And that isn't known - they're hardly going to rush forward are they?
No, they're certainly not, Caroline. I said I could give numerous reasons why. The first that comes to mind is that the photographer MAY have had the hots for Sheila and been married to a friend of hers. Hardly, under those circumstances, likely to admit his involvement. He may have been taking the photographs as payment for drugs he'd provided her with. Hardly likely to admit his involvement with that, is he? It maybe that taking porny pics was a sideline to his legitimate work. Unlikely to want his cover blown there, is he?
As you say, whoEVER took the pictures, they're not likely to want to put their name to them. There are FAR more reasons for them keeping quiet than owning up.