Lens cleaning
Have you ever thought about how dirty a camera lens gets? not the sensor just the lens.
Well I hadn't anyway for a long time.
I happen to have a tube of Allsop Ultreen Cleaning Solution which I used to use on cleaning cd/dvds. it is brilliant for cleaning camera lens glass, together with a pencil type swab and mico fibre cloth.
This is well worth doing
unedited
to me the overall image above looks a lot cleaner