the 24-105 F4L is a spectacular lens - one of the bets Canon have made in a long time. its idea for RC and general walk about photography. the 17-85 is too short for most tracks with more and more of them limiting your ability to get close to the action for safety reasons.
Neil.
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Neil J. McRae -- Alive and Kicking -- Hong Nor - OS Engines - Canon 30D
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