looking for a website with sample pictures...

im looking for a website or database that would have sample pictures of a 28
mm - 135 mm - f/3.5-5.6 USM - Canon EF... i would like to see how well the
zoom is and how close it gets the subject... like a side by side of a
picture taken with the 28mm setting and the same scene with the 135mm
setting...

anyone have a website they can recommend?


thanks.............