ef-s 18-135 stm wobbles normal?

[gtangas]

Hello friends

first big hello to everyone! 

need some info... i bought a second hand lens 18-135 stm that shows some wooble on the barrel.

extended to the 135mm the barrel woobles a bit and full rectracted at 18mm and i shake the lens i can hear the barrel woobles inside!

can anyone tell me if that is normal on this model?? 

Best regards

[TTMartin]

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@gtangas wrote:

Hello friends

first big hello to everyone! 

need some info... i bought a second hand lens 18-135 stm that shows some wooble on the barrel.

extended to the 135mm the barrel woobles a bit and full rectracted at 18mm and i shake the lens i can hear the barrel woobles inside!

can anyone tell me if that is normal on this model?? 

Best regards

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No it does not sound normal. I just checked mine and it has no wobble even when fully extended. 

[gtangas]

hi

thanks for your repply

i saw some reviews and the non stm version ad some reports of this issue but i cant find none of the stm version!

Its not a big wobble but if you shake the camera (in my case a 70d) with the barrel extended or even retracted you can feel that barrel shaking...

i like the IQ but not very happy with this problem! 

[TTMartin]

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@gtangas wrote:

hi

thanks for your repply

i saw some reviews and the non stm version ad some reports of this issue but i cant find none of the stm version!

Its not a big wobble but if you shake the camera (in my case a 70d) with the barrel extended or even retracted you can feel that barrel shaking...

i like the IQ but not very happy with this problem! 

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Canon upped both build quality and image quality when they added the STM focus motor to their lenses. Mine is rock solid with no wobble. I would not consider any wobble as normal in an STM lens.

[gtangas]

its better to return the lens and wait for another deal on the second hand market... one without this issue! 

i sold an old sigma 18-200 that never gave very nice results and no doubt that this new stm lenses are awesome!

i bought very recently the 10-18 and im very pleased with the results! 

Thanks for your help TTMartin! 

[TCampbell]

How much shaking are you doing?  Most image-stabilized lenses will make a bit of noise with a strong shake.  The in-lens image stabilization involves lens elements that have to move (physically) and if you shake it hard enough you can hear it knock.  

One probably shouldn't be making a habbit of shaking the lenses aggressively.  But if you hear it with just casual movement of the lens then I might give this a more careful inspection and testing.

[Waddizzle]

Wobbles and noises are abnormal.  Can it still auto focus properly?  

[gtangas]

You can ear that rattle with a small shake of the.camera... its not a too loose sound but...

With the barrel full extended it wiggle a little bit

The focus work ok, stab works ok too

I was testing my canon 10-18 and there is a little play to (almost nothing) not as pronounced as the 18-135 but they have different weights and sizes

Maybe it's normal and I'm making problem of it but my older sigma didn't make this symptom

I will try visit a store and check a brand new just for comparison.....

[gtangas]

So Just tried the non stm version and brand new... it rattles and wobbles...

tried too the 55-250 stm and rock solid... definitely the stm versions have another build quality....

[gtangas]

Update info...
Went to fnac and tried brand new 18-135 stm and the new nano usm version.

The stm shows the same amount of rattle and wobble that the one I have.(mine shows a little more since it's used)

The nano usm is rock solid... different construction... different value too.

The guy from fnac show me 2 lens of the stm version and the two reveals the same behaviour.

So I have to concluded that the small wobble and rattle is ok and a not a problem... annoying at least but ok

Funny is that the 55-250 doesn't wobble... is an smaller barrel and the weights less... and maybe that's the reason for is solid construction