lens won't work

[Zalan]

I have a 24 - 105 USM lens on my  Canon 5D
It now only works on 24 mm. On any other zoom setting, the mirror goes up but won't come back down until I switch the camera off.

The problem is connected to the fact that the depth of field preview button doesn't work either. Pressing it closes the iris, but it gets stuck and won't release.

Do not reply to this message unless 1) you have had experiance of this problem and 2) you can suggest what I might try myself for a simple fix.

Thanks.

[ebiggs1]

"So my next step is to contact them."       Yes.

[Zalan]

I took the lens in to a loczl rapir shop. He has done a few of these, so that gives me a bit of confidence.

It is the diaphragm and cable that need replacing

$370

[jrhoffman75]

Thanks for feedback. It could be a help to others.

[ebiggs1]

"I have a 24 - 105 USM lens ..."

At $370 you are half way, or over, to the cost of a new lens.  Not saying just saying.