I'm not sure if you quite understand what a "1.6 crop factor" is. It means no matter which lens you mount, EF-s, EF or anyting else, you multiply the focal length by 1.6 to get a equivalant focal length in 35mm or full frame. 35mm is a normal lens on a 1.6 body, you would be looking at somthing like 15-22mm range for a wide angle.
John.
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