Question about Canon EF 17-40mm f/4L USM Lens

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Soft ratcheting noise when focussing

Just took delivery of this unit ,and put it on my 350d press the button an i can feel and hear the focussing motor moving the inner lens ,this appears to be notchy and unlike any lens i have had before, can someone tell me ,is this normal?

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I've had mine repaired out of a center in New York. they did an excellent job. Replaced the servo and internal focus ring. It is an inexpensive lens but can be repaired much cheaper than replacing it. if you don't shoot 10s of thousands of pictures a year or can live with a little less than professional quality...and don't have the money, the repair of the beast is a good alternative.

Posted on Feb 04, 2009

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Yes, most are like that.
Canon is making a killing with lens: 17-40/4.0L; 24-105/4.0L and those EFS lens.
You've purchased about $800.00 and have a 40/F4.0, that is very slow.
This is a cheaper L lens and at lower cost.
The better model would be 16-35/2.8L II, but the cost is high.
Send it back and pray that they will give you an exchange.
Or better, asks for the upgrade: 16-35mm/f2.8L II. This lens will hit you around $1,700.00.

Posted on Dec 29, 2007


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