Thanks for the replies. They look to be quite expensive lenses. Would something like this do the job as well http://www.talkphotography.co.uk/forums/showthread.php?t=177026 AF-S DX NIKKOR 18-200mm f/3.5-5.6 G ED VR II as it looks like it may be a more versatile lens that I could use for other things as well but I really don't know what I'm talking about so am probably wrong![]()