Checking canon lense

JasonNBK · 15th December 2006

Hi,

Is it common to hear sounds of parts rubbing against each other when you turn the zoom ring on a zoom lense?

user111 · 16th December 2006

no.

the zoom ring is covered with one big piece of rubber. nothing much to hear when u turn it to zoom.

fWord · 16th December 2006

Yes, it's normal. Regardless of how much lubrication is placed on the parts of a lens some sound will still be heard. After all, it is the result of friction between the parts which in effect slows things down and causes it to stop. Otherwise, your focus ring would spin endlessly after a single turn.

Anyway, bad joke aside. It depends on what sort of noise you're hearing. It should not sound abrasive, as if there is sand stuck in there. Neither should there be excessive creaking or a whining sound. I think a mild 'hissing' sound is acceptable.

jeremyftk · 16th December 2006

Nonsense. There will surely be some sounds of friction as parts move. How bad or how loud it is will be a totally different issue and dependent on the lens in question...

JoshSiao · 16th December 2006

As they have said above, theres always friction. Just ensure that the turning is smooth and consistant.

JasonNBK · 19th December 2006

Thnks Guys,

There seems to be some kind of rubber rubbing against something. Anyway I bought this lense from one of the guys in the forum. Still waiting for him to get back to me as he is overseas. I need a copy of his purchase receipt so that I can bring the lense down to the service centre to let them have a look.

Thnks for the input guys.

15th December 2006	#1
JasonNBK New Member Join Date: May 2004 Location: Singapore, Jurong Posts: 15	Checking canon lense Hi, Is it common to hear sounds of parts rubbing against each other when you turn the zoom ring on a zoom lense?

16th December 2006	#2
user111 Senior Member Join Date: Jul 2004 Posts: 4,719	Re: Checking canon lense no. the zoom ring is covered with one big piece of rubber. nothing much to hear when u turn it to zoom.

16th December 2006	#3
fWord Senior Member Join Date: Jun 2005 Location: Melbourne, Australia Posts: 3,347	Re: Checking canon lense Yes, it's normal. Regardless of how much lubrication is placed on the parts of a lens some sound will still be heard. After all, it is the result of friction between the parts which in effect slows things down and causes it to stop. Otherwise, your focus ring would spin endlessly after a single turn. Anyway, bad joke aside. It depends on what sort of noise you're hearing. It should not sound abrasive, as if there is sand stuck in there. Neither should there be excessive creaking or a whining sound. I think a mild 'hissing' sound is acceptable. __________________ LightWorks Portfolio Night Photography

16th December 2006	#4
jeremyftk Member Join Date: Jun 2005 Location: Eastern Singapore Posts: 694	Re: Checking canon lense Nonsense. There will surely be some sounds of friction as parts move. How bad or how loud it is will be a totally different issue and dependent on the lens in question...

16th December 2006	#5
JoshSiao Member Join Date: Sep 2006 Location: Serangoon Gardens Posts: 309	Re: Checking canon lense As they have said above, theres always friction. Just ensure that the turning is smooth and consistant. __________________ 5D MII w/16-35L,Sigma 28-70&Nikkors(35f2,85f1.4,105f2.5,180f2.8ED) http://joshsiao.spaces.live.com

19th December 2006	#6
JasonNBK New Member Join Date: May 2004 Location: Singapore, Jurong Posts: 15	Re: Checking canon lense Thnks Guys, There seems to be some kind of rubber rubbing against something. Anyway I bought this lense from one of the guys in the forum. Still waiting for him to get back to me as he is overseas. I need a copy of his purchase receipt so that I can bring the lense down to the service centre to let them have a look. Thnks for the input guys.