For anyone wishing to take a photographic tour of Ireland, check out http://www.focusonireland.com
Focus on Ireland operate various tours in different parts of Ireland and will bring you to some great sites which are not your usual places which can get over-run with tourists. They can also tailor make a tour to suit your tastes.
When comparing their prices to other similar tours, they are very reasonable.
I have no financial interest in their business but I know the people involved and can only say they are decent folk.