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New Contributor
Posts: 2
Registered: ‎05-07-2019

Canon 17-40mm f4l Can't attach in camera

Hello!

 

I have a Canon 7D and used the Canon Lens 17-40mm f4L every day. This lens never fell or was hit. There is no visible why the lens has stopped snapping into the camera. It's like there's something blocking the fit. I can use other lenses in 7D as usual. I wonder if anyone has gone trough something similar and has managed to solve this problem; Thanks!

Honored Contributor
Posts: 5,653
Registered: ‎11-13-2012

Re: Canon 17-40mm f4l Can't attach in camera

Look for a piece of debris perhaps stuck in the depression that the locking pin snaps in.

John Hoffman
Conway, NH

1D X, Rebel T5i, Many lenses, Pixma PRO-100, MX472, LRCC Classic
Frequent Contributor
Posts: 70
Registered: ‎11-14-2018

Re: Canon 17-40mm f4l Can't attach in camera

Also verify that all of the screws are tight.

Honored Contributor
Posts: 5,653
Registered: ‎11-13-2012

Re: Canon 17-40mm f4l Can't attach in camera

I forgot to mention - also verify that the lens lock button on the camera moves freely and isn’t sticking. 

John Hoffman
Conway, NH

1D X, Rebel T5i, Many lenses, Pixma PRO-100, MX472, LRCC Classic
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Posts: 11,001
Registered: ‎12-07-2012

Re: Canon 17-40mm f4l Can't attach in camera

"...also verify that the lens lock button on the camera moves freely and isn’t sticking."

 

Hmmm, doesn't sound likely does it?  Smiley Surprised

 

"I can use other lenses in 7D as usual"

 

EOS 1DX and 1D Mk IV, even less and less other stuff.
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