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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 14 Oct 2012 (Sunday) 04:40
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IS question on Canon 100-400L

 
Bill ­ Ragosta
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Oct 14, 2012 04:40 |  #1

When I carry my 100-400, particularly if it's tilted down and most especially if it's fully extended, I can hear and feel what I presume to be the IS system rolling and clunking around inside. The lens is sharp and functions properly otherwise, I'm just curious if I should feel that IS motor moving inside while simply walking (I'd understand if I was in a full-out sprint down the road with it).

It's still under warranty and if it's behaving improperly, I suppose I should get it taken care of. Like I said, it performs well otherwise and maybe that's just normal for this lens.

Thanks in advance for any answers or opinions.


Canon 60D, Canon 30D with grip, EF 70-300 IS USM, Tokina AT-X Pro 100 f/2.8 macro, EF 100-400 1:4.5-5.6L, EF-S 15-85 IS USM, Sigma 50 f2.8 macro EX, 430 EX II

  
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Lowner
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Oct 14, 2012 09:17 |  #2

Mine does not do this.


Richard

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neilgcart
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Oct 14, 2012 09:19 |  #3

Not something I have ever noticed with mine.

Neil




  
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Seapup
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Oct 14, 2012 13:08 |  #4

Lowner wrote in post #15120313 (external link)
Mine does not do this.

Mine neither.


Canon 5D2 | 60D | A620 | SD850 IS | SD4000 IS
Canon 10-22 f/3.5-4.5 | 17-55 f/2.8 IS | 50 f/1.4 | 100 f/2.8L Macro IS | 70-200 f/2.8L IS II | 100-400 f/4.5-5.6L IS

  
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Bill ­ Ragosta
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Oct 14, 2012 14:25 |  #5

Great. Alright, I'll contact Canon customer service then and see what's up. I'm a bit miffed because the lens is pretty sharp and I'm not sure that I want it swapped out but I surely don't want a broken lens either. Thanks for the responses all.


Canon 60D, Canon 30D with grip, EF 70-300 IS USM, Tokina AT-X Pro 100 f/2.8 macro, EF 100-400 1:4.5-5.6L, EF-S 15-85 IS USM, Sigma 50 f2.8 macro EX, 430 EX II

  
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BigLobowski
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Oct 14, 2012 16:39 as a reply to  @ Bill Ragosta's post |  #6

I might be off base with this suggestion, however I noticed after replacing my 70-200f/4 with a 70-200f/2.8 a light "clunking" when moving with the camera around the neck on the strap. Traced it to a very slight amount of movement between the lens and the body at the mount (not lateral, but as if to try and remove without depressing the release button). This seems to be magnified when walking/moving with the camera slung around the neck by the strap. My 15-85 f/3.5-5.6 has the same amount of slight movement, but thinking the length is substantially shorter and lighter, this movement isn't telegraphed through the lens body as much as the larger lens. Is this slight "slack" at the lens to body mount normal?


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alazgr8
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Oct 14, 2012 17:00 |  #7

Try the lens lock, see if that makes any difference. -rick


Rick S.
My Gear = Canon 50d ~ EF 100 f/2.8L IS USM Macro ~ EF 100-400 f/4.5-5.6L IS USM ~ EF-S 17-55 IS USM f/2.8 IS ~ EF 70-300 f/4-5.6 IS USM ~ EF 28-135 IS f/3.5-5.6 IS USM

  
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JuliusUpNorth
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Oct 14, 2012 18:09 |  #8

I have never noticed this, either. Rick's recommendation seems worth a try, though. If you do send it in to Canon, please let us know the result.

Julius




  
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Bill ­ Ragosta
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Oct 15, 2012 04:28 |  #9

BigLobowski wrote in post #15121740 (external link)
I might be off base with this suggestion, however I noticed after replacing my 70-200f/4 with a 70-200f/2.8 a light "clunking" when moving with the camera around the neck on the strap. Traced it to a very slight amount of movement between the lens and the body at the mount (not lateral, but as if to try and remove without depressing the release button). This seems to be magnified when walking/moving with the camera slung around the neck by the strap. My 15-85 f/3.5-5.6 has the same amount of slight movement, but thinking the length is substantially shorter and lighter, this movement isn't telegraphed through the lens body as much as the larger lens. Is this slight "slack" at the lens to body mount normal?

I don't know the answer to that questionf. I have a 15-85 and have never noticed anything like this. With the 100-400, I THINK that if I keep the tension ring tight and the lens fully retracted that the sensation or noise goes away. I already contacted Canon customer service by email and they didn't seem to have an answer and they seemed perplexed by my situation but they offered to take a look at it. I'm going to take some time with it today to see if maybe it's my imagination but if it's something that they've not encountered before, I don't want to be messing with it.

Something else struck me as odd too. I was reading the warranty and I get the impression that they're only required to fix or replace with a refurb if something is broken. Since I purchased the lens new less than two months ago (not a refurb), I'm not sure why I'm not entitled to a new lens, if in fact something's seriously wrong with this one.


Canon 60D, Canon 30D with grip, EF 70-300 IS USM, Tokina AT-X Pro 100 f/2.8 macro, EF 100-400 1:4.5-5.6L, EF-S 15-85 IS USM, Sigma 50 f2.8 macro EX, 430 EX II

  
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IS question on Canon 100-400L
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