topic Re: Tripod Collar seized on 100-400 ii in EF & RF Lenses

Tripod Collar seized on 100-400 ii

ivejar — Fri, 06 May 2016 05:15:40 GMT

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.

Re: Tripod Collar seized on 100-400 ii

Waddizzle — Fri, 06 May 2016 06:27:01 GMT

@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.

Re: Tripod Collar seized on 100-400 ii

ebiggs1 — Fri, 06 May 2016 10:35:46 GMT

"... the 100-400 ii seize up?"

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

"I've tried everything ..."

Like what?

Re: Tripod Collar seized on 100-400 ii

cicopo — Fri, 06 May 2016 12:42:59 GMT

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.

Re: Tripod Collar seized on 100-400 ii

ivejar — Fri, 06 May 2016 14:55:19 GMT

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.

Re: Tripod Collar seized on 100-400 ii

ivejar — Fri, 06 May 2016 16:38:39 GMT

Tried that. I think I'll need to take it in.

Re: Tripod Collar seized on 100-400 ii

RobertTheFat — Fri, 06 May 2016 18:55:49 GMT

@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.

Re: Tripod Collar seized on 100-400 ii

ivejar — Fri, 06 May 2016 19:12:02 GMT

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.

Re: Tripod Collar seized on 100-400 ii

ivejar — Fri, 06 May 2016 19:12:13 GMT

Re: Tripod Collar seized on 100-400 ii

Waddizzle — Fri, 06 May 2016 19:25:44 GMT

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

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.

Re: Tripod Collar seized on 100-400 ii

Waddizzle — Fri, 06 May 2016 19:34:44 GMT

@ivejar wrote:
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.

Not exactly like the 70-200mm. Here is page 15, which is referenced in the above illustration.

It is supposed to offer some resistance, and not turn smoothy and continously. It is supposed to click as it turns.

Here I was, planning to go and pick up one of these tomorrow from my favorite superstore.

Re: Tripod Collar seized on 100-400 ii

ivejar — Fri, 06 May 2016 19:59:02 GMT

Thanks all, but my collar won't rotate even a little. I've loosened the knob all the way, even removed it to see if some dirt might have gotten in, but it will not rotate. My sister had this lens also. Her collar rotates just fine, so I know there is a problem with mine. I was hoping someone here might have an idea that I've not tried.

Re: Tripod Collar seized on 100-400 ii

ivejar — Sat, 14 May 2016 04:40:09 GMT

Thank you for taking the time to post the diagram. I did try mounting it to the monopod and my tripod. The locking knob rotated fine, but somehow it was jammed tight.

When I took it into the shop they pulled another one out and it rotates quite freely when the knob is loose, so there is definitely a problem with the collar.

I understand the collar does not come off, but it should rotate and for some reason mine is stuck.

Again, thank you all for your responses. It's now at Canon repair facility. I'll post an update when I hear from them.

Re: Tripod Collar seized on 100-400 ii

valleyvisions — Sat, 04 Mar 2017 15:33:55 GMT

ivejar, can you update as to the solution of this problem? I've just encountered the same issue. Bob

Re: Tripod Collar seized on 100-400 ii

ivejar — Sun, 05 Mar 2017 19:41:51 GMT

I still do not know what happened to the collar, but believe I damaged it further trying to get it loose, so don't go there. Luckily I had insurance because the lens had to be repaired by Canon, took a month to get it back at a cost of almost $700.

Re: Tripod Collar seized on 100-400 ii

valleyvisions — Sun, 05 Mar 2017 23:26:58 GMT

Ok,thanks.

Re: Tripod Collar seized on 100-400 ii

Waddizzle — Mon, 06 Mar 2017 00:29:42 GMT

@ivejar wrote:
I still do not know what happened to the collar, but believe I damaged it further trying to get it loose, so don't go there. Luckily I had insurance because the lens had to be repaired by Canon, took a month to get it back at a cost of almost $700.

Beware of overtightening the collar locking screw.

Re: Tripod Collar seized on 100-400 ii

Dwwmc — Thu, 13 Jun 2024 05:51:04 GMT

Mine no longer rotates easily. And yes I know how to use it. This lens is now more than 7 years old. It has been used more times than I can count. Recently, it became difficult to turn. Everything has been loosened before some says it. It feels like dirt is in the ring. Since it is used on baseball fields, it is very possible. Since Canon no longer services this lens, anyone know of a way of cleaning the ring without dismantling the lens?