I am planing to buy one of this lens and I would like to know which one will be best for spotting. the lens are
Canon EF 28-135mm f/3.5-5.6 USM IS Zoom Lens
Canon EF-S 17-85mm IS USM zoom lens f/4-5.6
I don't know much about lens so I thought I will ask the experts here on which they think is the best out of the two.
Currently I have the Canon 55-250mm Telephoto Lens with I.S and the Canon 18-55mm lens without I.S