75/300 USM IS shake during focusing

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Hi! I just bought a new lens 75/300 USM IS. I found a strange thing. When I hold the camera in vertical & foucus on a object, there is a sound with a slight shake thru' the view finder. May I know if it is normal or not. Anyone can help? Thanks a lot!

-- John Yau (johnjohn@asiaonline.net), August 29, 1999

Answers

Normal, don't worry about it.

-- kurt heintzelman (heintzelman.1@osu.edu), August 30, 1999.

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