sounds on EF 100-400 L IS II USM

[haggie]

Today I received my brand new EF 100-400mm L IS II USM.
Naturally, I immediately put it on my camera to check it out.

But (almost) every time I focus on something different, I hear a quite loud clicking sound. It is one and sometimes two quite loud clicks.
If the focus adjustment is relatively small, it (often) does not click.

I tested another copy of this lens in the store a few weeks ago, and then I did not hear anything at all: focus was almost whisperless. And IS was also on, then.

Is this sound a known 'issue'?
Or worse: is it (a first sign of) a defect?

Also, zoooming is not very smooth. The lens I tried at the store zoomed very smooth.
But this copy seems to be a bit different. It is always hard to describe mechanical 'feel' of something, but it feels as if some lubrication film is less than it should be.

Again, is this a known 'issue'? Or worse: is it (a first sign of) a defect?

Thanks for sharing any experiences!

 

[RunAndGun]

I can't address the clicking sound, because I've never paid any attention/noticed on mine, but regarding the zoom, have you checked the zoom tension ring? You can adjust it to be tighter or looser. I turn it all the way loose when shooting with it and all the way tight when storing/not using the lens to keep it from extending when removing it from the bag.

 

[IglooEater]

No experience with this lens, but the fact that both issues (unsmooth zooming, and autofocus clicking) were not present on the other copy you tried, I'd simply return it or get it exchanged. No way are either of those symptoms normal.

 

[Click]

... I'd simply return it or get it exchanged. No way are either of those symptoms normal.

+1

 

[Jopa]

... I'd simply return it or get it exchanged. No way are either of those symptoms normal.

+1

+2
Unless you're using it on a Sony body via an adapter, it shouldn't be any clicks.

 

[YuengLinger]

Mine is very quiet.

Did you get yours new from a Canon Authorized Dealer?

 

[haggie]

Thanks you all very much for the swift and clear answers, guys!

I did order my lens from a Canon Authorized Dealer.
Therefore I just wanted to be sure that my initial thought of returning it was not over-reacting.

But now I will return it with confidence and just get another copy.
Hopefully it will be gone then.

Thanks again for all answers!