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Occasional Contributor
Posts: 9
Registered: ‎05-06-2016

Tripod Collar seized on 100-400 ii

Has anyone out there had the tripod collar on the 100-400 ii seize up? Mine won't budge. I've tried everything I can think of and just wondered if anyone else has had success getting it to move.

 

I've got a workshop coming up in 3 weeks and don't have the time to ship it off for repair.

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VIP
Posts: 9,201
Registered: ‎08-13-2015

Re: Tripod Collar seized on 100-400 ii


@ivejar wrote:

Has anyone out there had the tripod collar on the 100-400 ii seize up? Mine won't budge. I've tried everything I can think of and just wondered if anyone else has had success getting it to move.

 

I've got a workshop coming up in 3 weeks and don't have the time to ship it off for repair.


 

You might try loosening and/or removing the tripod foot, to see if that relieves any stress, pressure, or debris holding the rotating ring in place. 

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"Doctor told me to get out and walk, so I bought a Canon."
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VIP
Posts: 12,252
Registered: ‎12-07-2012

Re: Tripod Collar seized on 100-400 ii

"... the 100-400 ii seize up?"

What do you mean?  It won't let you turn it?

"I've tried everything ..."

Like what?

 

EOS 1DX and 1D Mk IV and several lenses!
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Esteemed Contributor
Posts: 2,362
Registered: ‎11-14-2012

Re: Tripod Collar seized on 100-400 ii

This is based on memory of when it first came out & Lens Rentals did their testing but I'm pretty sure it can't be removed like the collar on Ver 1. Removal requires some dismantling.

"A skill is developed through constant practice with a passion to improve, not bought."
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Occasional Contributor
Posts: 9
Registered: ‎05-06-2016

Re: Tripod Collar seized on 100-400 ii

Yes, it can't be removed without dismantling. I have removed the screws completely. Tried putting a few drops of silicone around the ring, etc. It just will not budge.
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Occasional Contributor
Posts: 9
Registered: ‎05-06-2016

Re: Tripod Collar seized on 100-400 ii

Tried that. I think I'll need to take it in.
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Honored Contributor
Posts: 5,292
Registered: ‎06-25-2014

Re: Tripod Collar seized on 100-400 ii


@ivejar wrote:
Yes, it can't be removed without dismantling. I have removed the screws completely. Tried putting a few drops of silicone around the ring, etc. It just will not budge.

Under the circumstances, are you sure that removing the collar is a good idea? They must have made it a semi-permanent installation for a reason. Maybe the collar is, in effect, a structural member and the lens can become slightly deformed if it's removed.

Bob
Philadelphia, Pennsylvania USA
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Occasional Contributor
Posts: 9
Registered: ‎05-06-2016

Re: Tripod Collar seized on 100-400 ii

I don't want to remove it. I just want to rotate it so that I can shoot portrait when using my monopod. It won't budge, but it is supposed to rotate similar to the 70-200.
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Occasional Contributor
Posts: 9
Registered: ‎05-06-2016

Re: Tripod Collar seized on 100-400 ii

 
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VIP
Posts: 9,201
Registered: ‎08-13-2015

Re: Tripod Collar seized on 100-400 ii

[ Edited ]

You have made no mention of it, so far.  You are turning the correct knob to loosen the collar? 

 

Lens_EF_100-400mm_PartsIdentification.PNG

 

Is that knob stuck, too?  It might be too hard to rotate the collar by hand.  Mount the camera/lens on a tripod, and then try it.

 

 

 

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