hello, I am new to SLR photography and I have a very small experience in lenses and this stuff.
I want to buy a telephoto lens for Canon XTi.
I thought about the 75-300mm F/4-5.6 III telephoto lens or sigma 70-300 but I'm very worried because they don't have image stabilizer. I don't know how much this image stabilizer would effect the quality. and I can't afford buying a canon IS lens. any recommendations ?