This summer im taking my bike and riding across america for charity. I also think this would be a great opportunity to explore my passion for photography. I will be purchasing Canon Digital Rebel XTI. I was wondering if anyone has any recommendations for a good light lens. I need something with great image stabilization, since most of these will be taken by hand. I would like something with some versatility, however, i will mainly be taking scenic shots. I would like to spend around 500.00. Anything come to mind?