Simon Watkins
Senior Member
Just arrived today, my new 300mm IS lens. Quick question. It makes some funny noises. Now I know it's the IS making the noise, but it's much louder than that in the 28-135IS I briefly owned which was barely audible, even up close. This makes quite a pronounced whirring that is easily audible a few inches from the lens. I suspect that it's completely normal, but please put my mind at rest 
The more worrying noise is as the IS starts up on a half press. It makes a fairly pronounced clunk, then goes into it's much quieter whirring. On releasing from a half press, there is a short delay, then another clunk as the IS cuts out. On reframing whilst half pressed (or generally moving the camera around), it again makes the occasional clunk. It all sounds rather agricultural, but not having had a lens like this before, I want to make sure before I get told by the camera dealer that it's normal
It's all IS related, as if I turn that off, no noises.
Appreciate any owner's comments. Is it duff, or normal?
Simon
The more worrying noise is as the IS starts up on a half press. It makes a fairly pronounced clunk, then goes into it's much quieter whirring. On releasing from a half press, there is a short delay, then another clunk as the IS cuts out. On reframing whilst half pressed (or generally moving the camera around), it again makes the occasional clunk. It all sounds rather agricultural, but not having had a lens like this before, I want to make sure before I get told by the camera dealer that it's normal
It's all IS related, as if I turn that off, no noises.
Appreciate any owner's comments. Is it duff, or normal?
Simon
