Just recently, I'm thinking of buying a 17-40mm L lens. I intend to upgrade to either 5D2 or 6D after sometime. My question is, is it really better than just having an APS-C + 10-22mm lens? This will be used for landscape photography. I'm also into macro photography but perfectly happy with a 500D + 100mm F2.8 USM lens. Should I just forget going FF and go for APS-C? I'm confused because I really love both macro and landscape photography. I'm planning to complete the set by next year March since summer starts in my place during that month.
