Grain of sand in focus ring?

Started Jan 13, 2011 | Discussions thread
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Oblvian
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Grain of sand in focus ring?
Jan 13, 2011

My 5DII's 24-105mm f/4L IS USM L lens feels like its focus ring may have a grain of sand inside.

Did some aerial photography from a doorless helicopter and upon landing the rotorwash blew in plenty of grass/debris into the helicopter. Some joker thought it would be great to cut the grass alongside the helipad and leave all the cut grass...

When I turn the focus ring, i feel some slight resistance and feel some foreign object like a grain of sand obstructing it. It does move all the way back and forth though.

Any help would be greatly... appreciated.

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