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henryjing · 04-07-2010, 10:12 AM

I just got a lens bought from a seller in this forums, and I found there is a dust inside the lens...
I am asking how to deal with it?
Any help will be appreciated

henryjing · 04-07-2010, 10:15 AM

I am now considering selling to somebody who is willing to fix it with a low price...

rockmaster1964 · 04-07-2010, 10:19 AM

Does it affect photos taken with it? Most of the time the dust does not matter.

**StephenMerola** · 04-07-2010, 10:30 AM

I think all my lenses have dust in them, new and old alike. A few specks here and there won't affect anything.

matam · 04-07-2010, 10:49 AM

I think it's quite normal to have dust inside the lens unless it's a WR one (i'm i wrong?), my kit lens is 2 month old and has a couple of dust grain inside (was my fault, shooting trough a window in a dusty place in a windy day....) but i can't see them in photos even with high f number.
Recently i bought a used lens that has a lot of dust inside (i even tought to deassembly it to clean it) but i can't see dust even with that one.

henryjing · 04-07-2010, 11:06 AM

It is a FA77, anyone inetersted, click here

JeffJS · 04-07-2010, 11:29 AM

Originally posted by henryjing

It is a FA77, anyone inetersted, click here

You can do whatever you like of course but, I think you're going to spend a LOT of money recycling lenses like this for A dust spec. That said, if I didn't already have a 77mm Ltd, I'd snap it up in a heartbeat. Good luck..

henryjing · 04-07-2010, 11:33 AM

Originally posted by JeffJS

You can do whatever you like of course but, I think you're going to spend a LOT of money recycling lenses like this for A dust spec. That said, if I didn't already have a 77mm Ltd, I'd snap it up in a heartbeat. Good luck..

Any recommendation?

LeDave · 04-07-2010, 11:39 AM

It really depends how much dust there is inside the lens. The item however is listed like-new shouldn't have too many. Every lens will eventually have dust getting inside sooner or later. If you are disappointed over a tiny amount then good luck on buying used lenses.

JeffJS · 04-07-2010, 11:58 AM

Originally posted by henryjing

Any recommendation?

Buy new and if possible do so locally. Then you can send them back and fourth until you get the perfection you seek. I don't blame you for Wanting perfection, that isn't what my post was about. Whether I would keep a lens or not would depend on how much I paid for it, and how much dust was inside. I didn't completely read the post you bought the lens from but if he advertised it as Dust Free (something I NEVER do), I would first be dealing with Him.

Like I said earlier, do as you wish. I read countless stories of even the flagship glass coming from the factory with slight imperfections like a spec or two inside. The nature of a focus mechanism, that sucks in and expels air, even a very minute amount, is eventually going to suck in a spec or two. The lens interiors are not vacuums and it's Going to happen.

kytra · 04-07-2010, 12:19 PM

IMO even you'll buy a perfect lens, since the DA 77mm is not sealed, sooner or later you'll get some dust inside as well - what yo'll do? sell it and get a new one?

deadwolfbones · 04-07-2010, 12:28 PM

Yeah, this is a dumb reason to resell.

Wheatfield · 04-07-2010, 12:31 PM

The only way to keep dust from getting into a lens is to keep it in a sealed and clean environment, and even then, good luckj with it.
Of course, this means you will never get to use it, and will never really get to even look at it, but if that's your thing, then good luck finding a perfect copy, and get used to returning a lot of equipment for no reason.
Personally, I think worrying about a fleck of dust in a lens to the point of selling it for that reason is more than just a bit silly, but we all have our fetishes.

dgaies · 04-07-2010, 01:00 PM

If you look hard enough, you'll find some dust in just about every lens. A few of my lenses have a fair number of dust specs inside (espeically the older ones), but I have yet to notice an issue with any the pictures I've taken. This includes shooting blanks walls at different apertures trying to make sure there was no issue. On the plus side, I managed to find a small piece of dust on my sensor when I stopped down to f/22 that I never noticed before.. it's gone now

NeverSatisfied · 04-07-2010, 01:25 PM

I got my Tamron 70-200/2.8 back from warranty repair (the "sticking aperture" issue), and happened to notice a rather large dust speck on the inside surface of the objective. I was a little concerned but after an afternoon of use, hey! the dust speck had disappeared, apparently deep into the innards of the lens. Apparently no cause for any concern! And no effect on any images taken either.

04-07-2010, 10:12 AM	#1
henryjing Veteran Member Join Date: Mar 2010 Location: United States Posts: 467	A dust inside the lens... I just got a lens bought from a seller in this forums, and I found there is a dust inside the lens... I am asking how to deal with it? Any help will be appreciated

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04-07-2010, 10:15 AM	#2
henryjing Veteran Member Join Date: Mar 2010 Location: United States Posts: 467 Original Poster	I am now considering selling to somebody who is willing to fix it with a low price...

04-07-2010, 10:19 AM	#3
rockmaster1964 Veteran Member Join Date: Oct 2008 Location: Frisco Texas Photos: Gallery Posts: 382	Does it affect photos taken with it? Most of the time the dust does not matter.

04-07-2010, 10:30 AM	#4
StephenMerola Site Supporter Join Date: Feb 2009 Location: Wisconsin Photos: Albums Posts: 423	I think all my lenses have dust in them, new and old alike. A few specks here and there won't affect anything.

04-07-2010, 10:49 AM	#5
matam Inactive Account Join Date: Mar 2010 Location: Berlin Posts: 112	I think it's quite normal to have dust inside the lens unless it's a WR one (i'm i wrong?), my kit lens is 2 month old and has a couple of dust grain inside (was my fault, shooting trough a window in a dusty place in a windy day....) but i can't see them in photos even with high f number. Recently i bought a used lens that has a lot of dust inside (i even tought to deassembly it to clean it) but i can't see dust even with that one.

04-07-2010, 11:06 AM	#6
henryjing Veteran Member Join Date: Mar 2010 Location: United States Posts: 467 Original Poster	It is a FA77, anyone inetersted, click here

04-07-2010, 11:29 AM	#7
JeffJS Inactive Account Join Date: Aug 2008 Location: Michigan, USA Photos: Gallery \| Albums Posts: 7,484	Originally posted by henryjing It is a FA77, anyone inetersted, click here You can do whatever you like of course but, I think you're going to spend a LOT of money recycling lenses like this for A dust spec. That said, if I didn't already have a 77mm Ltd, I'd snap it up in a heartbeat. Good luck..

04-07-2010, 11:33 AM	#8
henryjing Veteran Member Join Date: Mar 2010 Location: United States Posts: 467 Original Poster	Originally posted by JeffJS You can do whatever you like of course but, I think you're going to spend a LOT of money recycling lenses like this for A dust spec. That said, if I didn't already have a 77mm Ltd, I'd snap it up in a heartbeat. Good luck.. Any recommendation?

04-07-2010, 11:39 AM	#9
LeDave Veteran Member Join Date: Jun 2009 Location: Minneapolis - St. Paul Photos: Gallery Posts: 3,067	It really depends how much dust there is inside the lens. The item however is listed like-new shouldn't have too many. Every lens will eventually have dust getting inside sooner or later. If you are disappointed over a tiny amount then good luck on buying used lenses.

04-07-2010, 11:58 AM	#10
JeffJS Inactive Account Join Date: Aug 2008 Location: Michigan, USA Photos: Gallery \| Albums Posts: 7,484	Originally posted by henryjing Any recommendation? Buy new and if possible do so locally. Then you can send them back and fourth until you get the perfection you seek. I don't blame you for Wanting perfection, that isn't what my post was about. Whether I would keep a lens or not would depend on how much I paid for it, and how much dust was inside. I didn't completely read the post you bought the lens from but if he advertised it as Dust Free (something I NEVER do), I would first be dealing with Him. Like I said earlier, do as you wish. I read countless stories of even the flagship glass coming from the factory with slight imperfections like a spec or two inside. The nature of a focus mechanism, that sucks in and expels air, even a very minute amount, is eventually going to suck in a spec or two. The lens interiors are not vacuums and it's Going to happen.

04-07-2010, 12:19 PM	#11
kytra Veteran Member Join Date: Dec 2009 Location: Bucharest Posts: 482	IMO even you'll buy a perfect lens, since the DA 77mm is not sealed, sooner or later you'll get some dust inside as well - what yo'll do? sell it and get a new one?

04-07-2010, 12:28 PM	#12
deadwolfbones Veteran Member Join Date: Sep 2007 Location: Santa Fe, NM Posts: 7,451	Yeah, this is a dumb reason to resell.

04-07-2010, 12:31 PM	#13
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,991	The only way to keep dust from getting into a lens is to keep it in a sealed and clean environment, and even then, good luckj with it. Of course, this means you will never get to use it, and will never really get to even look at it, but if that's your thing, then good luck finding a perfect copy, and get used to returning a lot of equipment for no reason. Personally, I think worrying about a fleck of dust in a lens to the point of selling it for that reason is more than just a bit silly, but we all have our fetishes.

04-07-2010, 01:00 PM	#14
dgaies Veteran Member Join Date: Oct 2009 Location: Maryland / Washington DC Posts: 3,917	If you look hard enough, you'll find some dust in just about every lens. A few of my lenses have a fair number of dust specs inside (espeically the older ones), but I have yet to notice an issue with any the pictures I've taken. This includes shooting blanks walls at different apertures trying to make sure there was no issue. On the plus side, I managed to find a small piece of dust on my sensor when I stopped down to f/22 that I never noticed before.. it's gone now

04-07-2010, 01:25 PM	#15
NeverSatisfied Veteran Member Join Date: Dec 2007 Location: S.E. Michigan Photos: Albums Posts: 688	I got my Tamron 70-200/2.8 back from warranty repair (the "sticking aperture" issue), and happened to notice a rather large dust speck on the inside surface of the objective. I was a little concerned but after an afternoon of use, hey! the dust speck had disappeared, apparently deep into the innards of the lens. Apparently no cause for any concern! And no effect on any images taken either.

A dust inside the lens...

Win a Pentax Limited Lens: Raffle Now Live!