So what is it that moves inside a 70-200 f/2.8L?

[FlyingPete]

I am wondering what is it inside the EF70-200 f/2.8L that you can feel moving about sometimes, feels like something is loose. Is the normal? The lens seems fine in all other respects.

[ddelallata]

Is it the IS version or not?

[FlyingPete]

Is it the IS version or not?

Non IS, it does feel simular to the movement of an IS mecahnism, but also occurs when the camera is swithced off, usually when in a vertical, or hanging position. Haven't noticed it whilst actually using the lens normally.

[ddelallata]

My f/4 version of this lens does this also when I shake it around :) . I wouldn't worry about it too much. I've read threads about other Canon lenses that make odd sounds. Must be the floating system that Canon uses on some of their lenses.

[ACDCROCKS]

I've used the IS but, I can hear the elements move back and fourth when zooming.I switched from Nikon, I somtimes forget which way to zoom "Left Paul LEFT!;) :rolleyes:

[FlyingPete]

My f/4 version of this lens does this also when I shake it around :) . I wouldn't worry about it too much. I've read threads about other Canon lenses that make odd sounds. Must be the floating system that Canon uses on some of their lenses.

Yes I wondered if it was the 'floating' element thing.

[ACDCROCKS]

Since I've been using internal focusing, I've always been afraid when I zoom back/ forward, that an element is hitting one another, I know there not ( and hope not ) but, it's always in the back of my head.