I currently have a 7D. Lenses i own are the Canon 17-55, 10-22, 70-200L f2.8 non IS and 100 mm L macro. I DO want to go to a full frame body. But the 5D3 is pretty expensive now. So I figure I'd slowly upgrade as I save. So I'm trying to figure out how to go about it. I was thinking of selling the 17-55 and 10-22 and getting the new 24-70 and a 17-40. I have a lot saved up and figure I can get those for what I sell the 17-55 and and 10-22. Then probably get the 5d3 next year. I just want to get a sense of what that 24mm will mean for my photography which includes landscapes, architecture, macro, and occasional portraits.