Canon EF 70-200mm f/4.0 L USM Lens: Amazon.co.uk: Camera & Photo Have been looking for a long lens for some time to add to my Canon 550D. Firstly, thanks to all those who have spent time contributing reviews which helped make my mind up. Not having a huge budget, I was looking at the Canon 70-300mm f4.0/5.6 IS USM and
