Vibration in 28-135IS

[Liang]

When I shake my 28-135IS, I heard clicking sound inside and also vibration in the front part. Is this normal?

[Scottes]

Yes, that's the IS motors and gyros starting and doing thier thing. The IS is trying to counteract your shaking and it's trying to keep the IS lenses in line to take a non-shaky picture. It's completely normal - though shaking the lens isn't - I wouldn't do that too much.

Try turning the IS off (can ya do that on the 28-135?) and check the difference.

[Liang]

Thanks for your advice.

[Jesper]

The 28-135 IS is a bit loose - i.e., when zoomed out you can wiggle the lens barrel quite a bit, it doesn't feel super solid. That's normal for that lens.

[mttmrphy]

I had the same concern when I got mine. I was relieved to hear that it was normal.

[Steveo31]

I had the same concern when I got mine. I was relieved to hear that it was normal.
Ditto.