I to have a rebel xti digital ,I have a Canon USM 28-135mm1:3.5-5.6 Imagaged Stabalized Zoom lens with uv filter and all Camera comes in at 2.75 Pounds. This is a very versatile lens with some Low end Macro capabilites and zoom features. It is not what I would like to carry for wildlife long distance shots. However, I feel if carrying one lens this is a keeper. The image stabalizer works awsome! about 350.00 for the lens when I bought mine . I think you would like it. I would love a to carry a high end fixed arp lens but the weight is imposible without a sherpa, LOL. Happy Trails