EF 17-40L inner barrel knocks @ 40

[Hydrogen]

Anyone with a 17-40L that can check theirs real quick for me?

On the refurb. copy I recently received from Canon, the inner barrel 'knocks' (moves) when the lens is at a FL of 40mm. You can hear it if you shake the camera around, but also induce it when applying some pressure with the index finger to the front lens element ring and moving it around.

I noticed this when I went to clean the front lens element with a microfiber cloth and solution as mine came with a smudge on the front element.

It only happens @ around 40mm (when the barrel re-extends at the longer end of the range.

Thank you

 

[Mt Spokane Photography]

You can feel play in the front part when extended, thats normal. Just how much play is difficult to describe in words. You should not hear noise from shaking it, so it might be too much.

If you think its too much play, and can't compare it with another one, call Canon and ask for a exchange, or return it.

 

[Hydrogen]

Thank you for checking. Sounds about right.