Noisy IS on 24-105mm F4

[daniemare]

If this has been hashed out before, I apologize, but I did try to search the topic but only got ISO results

As an excited owner of a new 6D and got the 24-105 L with it I noticed a very noisy sound from the lens while keeping the shutter button half depressed (i.e. locing focus). I know this is the IS and even confirmed by switching it off and the noise goes away.

Now I understand that IS is actually a motorized movement of a lens group and thus expect a bit of a sound and all of my IS lenses does that, but this sounds suspiciously louder, louder even than my Sigma 17-50 F2.8 OS and that I did not expect.

Is this normal or should I take it back to the store?  To describe the noise level is difficult, but it is noticebly louder than my 100L macro and as my Sigma

Thanks

[Sporgon]

At Building Panoramics we have two 24-105's and one has louder IS than the other. Both work fine though.
As you have pointed out though, it's difficult to define "noisy"

[BruinBear]

Really depends what you mean by noisy. My 24-105 is significantly louder than my sigma 17-50 f/2.8 OS, especially when it starts up you can hear a pretty noticeable chirp.  My 70-200 is silent in operation but the startup/stopping causes a pretty loud noise. All work fine, except for the sigma actually that went in last week for an AF issue.  So i wouldnt worry about it unless there is something actually wrong with the operation.

[bykes]

Mine is loud too.  It's normal for this lens.