O-ring Trick Helps Keep Sensor Clean!

Started May 9, 2012 | Discussions
Jerry Canon
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O-ring Trick Helps Keep Sensor Clean!
May 9, 2012
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I stumbled on this simple trick that greatly improves sensor hygiene by accident recently. Actually, I was trying to help the "lens-crawl" issue with my 18-200 by placing this o-ring in the groove between the lens's zooming ring and lens barrel, but it really didn't turn out to work that well to stop the crawl.

So, just for the heck of it, I rolled it on back to rest in the groove between the lens and body. Since then, I've had virtually zero issues with sensor dust. I think a lot of stuff sneaks in thru this little crack. When changing lenses, I just roll it back onto the lens flange on the body. Sorry I don't have the specs on the o-ring itself but it's probably pretty flexible and forgiving.

Jerry

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wll
wll
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Jerry Canon, May 9, 2012

it not only may cut out micro dust, but it looks cool ;- )

wll

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TeaAholic
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Jerry Canon, May 9, 2012

So basically a rubber band to stop dust entering between the mount and lens. Great find. I guess you just can't get a complete dust seal with the metal mount touching the metal lens.

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DezM
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Jerry Canon, May 9, 2012

It looks good but dust can collect on the O-ring as well, no?
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FMPhoto
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to DezM, May 9, 2012

Telling us the size of the Oring or where you got the particular o ring would help too

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wkhc168
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Jerry Canon, May 9, 2012

Where do you get the o-ring and what is the size?
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richg101
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to DezM, May 9, 2012

DezM wrote:

It looks good but dust can collect on the O-ring as well, no?
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Dez

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I'm freezing to death in Siberia. Shall I make a fire to keep warm? Nah, I don't want my clothes to smell of smoke.. I'll just curl up and die.

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El Matadurr
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to richg101, May 9, 2012

richg101 wrote:

DezM wrote:

It looks good but dust can collect on the O-ring as well, no?
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Dez

http://dezsantana.com

I'm freezing to death in Siberia. Shall I make a fire to keep warm? Nah, I don't want my clothes to smell of smoke.. I'll just curl up and die.

....umm...what?

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MBRuss
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to richg101, May 9, 2012

richg101 wrote:

DezM wrote:

It looks good but dust can collect on the O-ring as well, no?
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Dez

http://dezsantana.com

I'm freezing to death in Siberia. Shall I make a fire to keep warm? Nah, I don't want my clothes to smell of smoke.. I'll just curl up and die.

I think his point was more that if dust collects on the o-ring, then it's likely to end up on the sensor anyway when you move the o-ring and unscrew the lens...

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Jerry Canon
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to MBRuss, May 9, 2012

MBRuss wrote:

richg101 wrote:

DezM wrote:

It looks good but dust can collect on the O-ring as well, no?
--
Dez

http://dezsantana.com

I'm freezing to death in Siberia. Shall I make a fire to keep warm? Nah, I don't want my clothes to smell of smoke.. I'll just curl up and die.

I think his point was more that if dust collects on the o-ring, then it's likely to end up on the sensor anyway when you move the o-ring and unscrew the lens...

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Well, I suppose it could, but it could collect on the area anyway...Huh? It's no more prone to introduce dust into the camera than if it wasn't there in the first place.

I've found that I actually have to roll the o-ring away (out of the groove) before I take the lens off. It creates a friction that won't let the lens turn otherwise.
Jerry

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Jerry Canon
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to wkhc168, May 9, 2012

wkhc168 wrote:

Where do you get the o-ring and what is the size?
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William C.
http://www.flickr.com/photos/wkhc/

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Actually, this particular o-ring came out of a MSR water filter maintainence kit and just happened to work for the purpose. Since o-rings are elastic, I would assume that you could probably pick up an assorted pack at Lowe's or Home Depot and find a couple in the mix that would work.
Jerry

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Morrie
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Jerry Canon, May 9, 2012

O-rings are not as elastic as you would think. There isn't much tolerance between being too tight to get on and being too loose to be of use. I doubt, in a random assortment of o-rings, there would be one suitable.

This is an interesting idea though. Is there any evidence that this is where the dust actually comes in?

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Jerry Canon
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Morrie, May 9, 2012

Morrie wrote:

O-rings are not as elastic as you would think. There isn't much tolerance between being too tight to get on and being too loose to be of use. I doubt, in a random assortment of o-rings, there would be one suitable.

This is an interesting idea though. Is there any evidence that this is where the dust actually comes in?

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Good question.. I would assume that there's a good chance since there's got to be some gap there, and I'm wondering if zoom lenses whose lenght change when zooming don't suck in some outside air right thru this micro-gap. I just know that since using the o-ring I hardly see any dust issues anymore.
Jerry

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i3c
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to Jerry Canon, May 9, 2012

My canon 24-105 has a rubber gasket in the lens mount area. Sounds like the o-ring serves a similar purpose.

For those interested you can buy o-rings on amazon (us) seller oringsusa has many different sizes & materials.

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Gary Eaves
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Re: O-ring Trick Helps Keep Sensor Clean!
In reply to i3c, May 9, 2012

Most auto parts stores have o-rings in a multitude of sizes. You should be able to browse and find the just the right size.

Good call!

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Tom Hoots
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Could you give us a diameter?
In reply to Jerry Canon, May 9, 2012

Jerry Canon wrote:

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Actually, this particular o-ring came out of a MSR water filter maintainence kit and just happened to work for the purpose. Since o-rings are elastic, I would assume that you could probably pick up an assorted pack at Lowe's or Home Depot and find a couple in the mix that would work.

I think this is a great idea -- I got a chunk of dust that showed up at f/8 just the other day -- it wasn't in the shots I took in the morning, but it was there in the afternoon. So, it definitely got in there some time during the day.

At the least, could you measure the diameter of your O-ring? I'm really not sure how much stretch I should expect when I go o-ring hunting, very soon.

Thanks!

Tom Hoots
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Jerry Canon
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Re: Could you give us a diameter?
In reply to Tom Hoots, May 9, 2012

Tom Hoots wrote:

Jerry Canon wrote:

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Actually, this particular o-ring came out of a MSR water filter maintainence kit and just happened to work for the purpose. Since o-rings are elastic, I would assume that you could probably pick up an assorted pack at Lowe's or Home Depot and find a couple in the mix that would work.

I think this is a great idea -- I got a chunk of dust that showed up at f/8 just the other day -- it wasn't in the shots I took in the morning, but it was there in the afternoon. So, it definitely got in there some time during the day.

At the least, could you measure the diameter of your O-ring? I'm really not sure how much stretch I should expect when I go o-ring hunting, very soon.

Thanks!

Tom Hoots
http://thoots.zenfolio.com
http://www.dpreview.com/galleries/4330317199/albums

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James Sherman
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Re: Could you give us a diameter?
In reply to Tom Hoots, May 10, 2012

Tom Hoots wrote:

At the least, could you measure the diameter of your O-ring? I'm really not sure how much stretch I should expect when I go o-ring hunting, very soon.

Take a lens along to your local hardware store and try some out for fit. My local Ace would be happy to help. The lens base is the same size as the mount & as long as the o-ring is stretched a bit it should be fine.

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JohnK
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O-ring Trick keeps OVF on camera
In reply to Jerry Canon, May 10, 2012

Hi Jerry, I like your use of O-ring, good to know. I too use an O-ring on my NEX. It keeps my OVF from falling off. After it slipped off another camera and I had to pay $100 for repair I tried various "safety" solutions before hitting on the O-ring, which works great!

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dannytang
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Re: Could you give us a diameter?
In reply to Tom Hoots, May 10, 2012

I just measured the outer diameter of my SEL50F18 and it's about 61.5mm and the groove is about 60mm.

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