Cheers Wendy, I had another go cos I was stupid and actually compensated for distortion on 50mm as if it was 17mm and I don't know who the boy is so I've been trying to blur him. They are a nuisance and there are millions of them, I suppose it is their sort of museum I certainly soon got bored with riding trams but you have to here in order to get around, they don't allow pedestrians to walk up the track. :(
I've been doing both brightness and blur on the same layer. :o
http://i38.tinypic.com/118lnhh.jpg