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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 12 Jul 2016 (Tuesday) 12:27
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Canon 24-105mm L IS USM

 
zeussbdc
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Jul 12, 2016 12:27 |  #1

Hello,

I just bought a Canon 24-105mm Lens (Used) and as i mount it on my camera and hold the camera with the lens down i notice the lens was zoomed out.. i wonder if that is a normal thing or that it is a problem with the lens.

Thank you, Daniel


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RDKirk
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Jul 12, 2016 12:30 |  #2

zeussbdc wrote in post #18065060 (external link)
Hello,

I just bought a Canon 24-105mm Lens (Used) and as i mount it on my camera and hold the camera with the lens down i notice the lens was zoomed out.. i wonder if that is a normal thing or that it is a problem with the lens.

Thank you, Daniel

Are you saying the lens zooms out on its own from gravity?

While it doesn't take very much effort to pull the lens outward, it should be able to hold its own weight when pointed downward. If not, that's a fault that needs repair.




  
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zeussbdc
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Jul 12, 2016 12:34 as a reply to  @ RDKirk's post |  #3

Yes that is correct.
Thank you verry much .. i will call them tomorrow for a replacement.


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shaunmcfd
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Jul 12, 2016 13:22 |  #4

Google zoom creep.


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Robin522
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Jul 12, 2016 13:31 |  #5

This is fairly normal for older lenses. After some time the zoom mechanism starts to lose some tightness, which causes zoom creep.


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Jul 13, 2016 04:25 as a reply to  @ Robin522's post |  #6

Yes it's lens creep and it's a negative feature of this otherwise excellent lens. I 'sorted' mine by lifting and moving the rubber zoom ring forward very slightly so it grips the lens body


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as per the attached jpeg which is not the sharpest of images but was done in a bit of a hurry. I had -previously tried quite a few different suggested fixes but this one works the best, for me.

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Scott ­ M
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Jul 13, 2016 07:07 |  #7

RDKirk wrote in post #18065065 (external link)
Are you saying the lens zooms out on its own from gravity?

While it doesn't take very much effort to pull the lens outward, it should be able to hold its own weight when pointed downward. If not, that's a fault that needs repair.

There is nothing to repair. This is a normal behavior for this lens (as well as many other zoom lenses) as it gets older. My 24-105L has done this for awhile now. It has no affect on the performance of the lens.


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RDKirk
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Jul 13, 2016 10:29 as a reply to  @ Scott M's post |  #8

If the creep is so great that it changes zoom while the lens is pointed downward, that is a performance fault. For instance, I commonly use my lens on a camera mounted above a stage shooting unattended video. If the zoom crept during that time, it would be a major problem for me.

There may be workarounds you can do with it, like this expensive rubber band workaround (external link), but if the OP has the option of exchanging the lens, he should take that option.




  
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Lbsimon
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Jul 13, 2016 10:43 |  #9

RDKirk wrote in post #18065886 (external link)
If the creep is so great that it changes zoom while the lens is pointed downward, that is a performance fault.

Not necessarily.

I am not sure about this particular model, but some other models have the lens creep when brand new. E.g., the 15-85 cannot be pointed down at all, it will move. The 18-200 even has a zoom lock to prevent the lens from moving down. I have the 24-105L, it has no lens creep if I just point it down, but it will move if I start walking. The 100-400L II has a ring to adjust how tight the zoom is, and if you make it too weak, to make it easier and faster to zoom, it will creep too.

I am not sure if the OP can get a replacement he will like.


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zeussbdc
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Jul 13, 2016 11:31 as a reply to  @ Lbsimon's post |  #10

First of all thank you all for your time to write here.

I fix it with the rubber from last night.To bad they dont have a lock button.I decide to keep the lens and not send it back for replacement even they did not inform me about this problem ..and the condition was Excelent(they sayd).. in my oppinion they should put something like good condition..but anyway..i got 6 months warranty so this week-end i will do some test to see if i should send it back or not.

Sorry for my english but i did not learn it in school :)

Thank you, Daniel


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Lbsimon
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Jul 13, 2016 11:46 |  #11

zeussbdc wrote in post #18065935 (external link)
Sorry for my english but i did not learn it in school :)

No need to apologize. There are so many POTN members for whom English is the second language (me included) that if you can convey your thoughts clearly, you are golden! :-)


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RDKirk
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Jul 13, 2016 13:28 |  #12

Lbsimon wrote in post #18065897 (external link)
Not necessarily.

I explained why zoom creep under its own weight is a performance fault, giving my own situation as an example. If it's not something that would bother you in how you use the lens, fine.

But zoom creep is a performance fault--the lens is not designed to creep. Creeping is not a design specification.




  
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Scott ­ M
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Jul 13, 2016 13:55 |  #13

RDKirk wrote in post #18066042 (external link)
I explained why zoom creep under its own weight is a performance fault, giving my own situation as an example. If it's not something that would bother you in how you use the lens, fine.

But zoom creep is a performance fault--the lens is not designed to creep. Creeping is not a design specification.

It may not be a design specification, but it is a reality for most zoom lenses where the barrel extends as the focal length changes. If your use requires a lens that does not suffer from zoom creep, then you probably need to look at a lens that does not extend as you zoom the focal length -- such as the EF 24-70 f/4L IS.


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Lbsimon
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Jul 13, 2016 16:57 |  #14

RDKirk wrote in post #18066042 (external link)
But zoom creep is a performance fault--the lens is not designed to creep. Creeping is not a design specification.

Agree, the lens is not designed to creep. However, some Canon lenses, like the 18-200, has a feature designed to combat the creep in the form of a lens lock. So the creep is not a fault, it behaves the way it was designed.


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JeffreyG
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Jul 13, 2016 18:19 |  #15

RDKirk wrote in post #18066042 (external link)
I explained why zoom creep under its own weight is a performance fault, giving my own situation as an example. If it's not something that would bother you in how you use the lens, fine.

But zoom creep is a performance fault--the lens is not designed to creep. Creeping is not a design specification.

I'd put it like this. If you simply point the lens down and the zoom barrel extends, then the lens has too much creep and probably should be repaired. As you gave in an example earlier in this thread, such behavior would make it difficult to use the lens whenever shooting up or down.

But what most lenses do, is that they creep when they are being carried about. On a normal shoulder strap the body and lens will point down and then bump against your butt or hip as you walk about. Practically all older or well used extending zooms will creep under this condition. When folks suggest that nearly all zooms will suffer from creep, this is generally what they are thinking of, and this is the condition for which zoom lock switches were created.

My EOS 24-70/2.8 II has a zoom lock ring. It isn't a cheap lens, but without the lock it will creep while being carried.

It does not creep simply from being pointed up or down.


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Canon 24-105mm L IS USM
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