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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 15 Sep 2012 (Saturday) 10:57
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Eek! Fog inside!

 
mattkrass
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Sep 15, 2012 10:57 |  #1

Hey everyone,

I'm on vacation at Disney World this week and I have a problem. I brought my Rebel with my 24-105mm and a rented 16-35mm. I've been using the rental almost exclusively and my 24-105 has been sleeping in my bag. Today I needed some reach so I went to switch and I noticed droplets of water all over the 24-105 and its fogged up pretty badly. It seems to be inside the lens the front and rear elements and UV filter look fine.

I am in a panic, everything I've read about this points to a universally bad ending. Is there anything I can do? I'm in the parks for the rest of the day today, then going straight to airport for my flight home. I am using resort transport so I'm not going to be able to get anywhere else really. If the lens needs servicing will the warranty cover it?

I'm screwed aren't I?

Matt


Matt Krass
Design Engineering Nerd | Canon EOS 6D | Canon EOS Rebel T2i | 24-105mm f/4L | 18-135mm f/3.5-5.6 | 75-300mm f/4-5.6 | 'Nifty' 50mm II f/1.8

  
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DreDaze
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Sep 15, 2012 11:07 |  #2

just wait...it'll probably just go away


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drzenitram
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Sep 15, 2012 11:22 |  #3

The lens should be fine, just let it dry out. Don't try to use it, and you'll have nothing to worry about. It's condensation, most likely from going in and out of air conditioning. The way to prevent this is to put your gear in a ziplock bag and let it change to ambient temperature before taking it out and using it.


| Bodies - 5D Mark II, T2i | Lenses - Helios 44-2, Sigma 35mm 1.4, Sigma 85 1.4, Sigma 70-200 2.8 OS, Tamron SP AF 1.4x TC | Lights - 430ex ii x2, Random 3rd party strobes

  
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c2thew
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Sep 15, 2012 11:56 |  #4

it is condensation and might go away, however if there is a lot of condensation, then the lens has to be opened by a technician to clean the elements.


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SoCalTiger
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Sep 15, 2012 12:01 |  #5

You'll also want to try to store your gear with dessicants (like silica gel) to further reduce the risk of this happening.


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rick_reno
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Sep 15, 2012 13:36 |  #6

watch for fungus after it dries.




  
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mattkrass
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Sep 15, 2012 15:28 |  #7

rick_reno wrote in post #14995331 (external link)
watch for fungus after it dries.

This is what I'm terrified of. Is there anything I an do after my flight to minimize risk of fungus?

Matt


Matt Krass
Design Engineering Nerd | Canon EOS 6D | Canon EOS Rebel T2i | 24-105mm f/4L | 18-135mm f/3.5-5.6 | 75-300mm f/4-5.6 | 'Nifty' 50mm II f/1.8

  
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drzenitram
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Sep 15, 2012 15:33 |  #8

Maybe get some cheesecloth and fill it with rice and put it in your bag?


| Bodies - 5D Mark II, T2i | Lenses - Helios 44-2, Sigma 35mm 1.4, Sigma 85 1.4, Sigma 70-200 2.8 OS, Tamron SP AF 1.4x TC | Lights - 430ex ii x2, Random 3rd party strobes

  
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mattkrass
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Sep 15, 2012 17:05 |  #9

drzenitram wrote in post #14995650 (external link)
Maybe get some cheesecloth and fill it with rice and put it in your bag?

I'm not familiar with cheesecloth?

I was going to put the lens in a sealed rice bowl as soon as it gets home, but that's the best I can do I think :(

Is this a guaranteed fungus situation? or has the internet grossly exaggerated the commonality of the problem?

Matt


Matt Krass
Design Engineering Nerd | Canon EOS 6D | Canon EOS Rebel T2i | 24-105mm f/4L | 18-135mm f/3.5-5.6 | 75-300mm f/4-5.6 | 'Nifty' 50mm II f/1.8

  
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Billginthekeys
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Sep 15, 2012 17:25 |  #10

I am assuming you had the bag in a cold hotel room/car and then noticed the fogging after you got out into the hot park?

Well them....Um.... welcome to Florida? It is humid here.

Failing pictures to make it look worse than anything anyone in Florida encounters in the above situation, I don't see what the panic is about. I have never had fungus on any of my lenses.


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mattkrass
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Sep 15, 2012 17:31 |  #11

Billginthekeys wrote in post #14996033 (external link)
I am assuming you had the bag in a cold hotel room/car and then noticed the fogging after you got out into the hot park?

Well them....Um.... welcome to Florida? It is humid here.

Failing pictures to make it look worse than anything anyone in Florida encounters in the above situation, I don't see what the panic is about. I have never had fungus on any of my lenses.

Every time I looked it up I came across utter horror stories about fungus, I guess I panicked a bit :)

The alarming part was that there were water droplets on the lens, but the rest of the bag is dry and it hasn't been near water, so I'm really quite confused. Also, I can tell it is definitely inside the lens, but not on the outer elements.

I'll try drying it out soon as I get home and then take some test shots in a few days and make sure it is OK.

Matt


Matt Krass
Design Engineering Nerd | Canon EOS 6D | Canon EOS Rebel T2i | 24-105mm f/4L | 18-135mm f/3.5-5.6 | 75-300mm f/4-5.6 | 'Nifty' 50mm II f/1.8

  
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drzenitram
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Sep 15, 2012 18:14 |  #12

mattkrass wrote in post #14996044 (external link)
Every time I looked it up I came across utter horror stories about fungus, I guess I panicked a bit :)

The alarming part was that there were water droplets on the lens, but the rest of the bag is dry and it hasn't been near water, so I'm really quite confused. Also, I can tell it is definitely inside the lens, but not on the outer elements.

I'll try drying it out soon as I get home and then take some test shots in a few days and make sure it is OK.

Matt

Cheesecloth is just a thin cloth used for holding things like cheese or tea or hops for brewing. It's cheap and usually pretty easy to find, but any kind of porous cloth would work well to help you dry things out.


| Bodies - 5D Mark II, T2i | Lenses - Helios 44-2, Sigma 35mm 1.4, Sigma 85 1.4, Sigma 70-200 2.8 OS, Tamron SP AF 1.4x TC | Lights - 430ex ii x2, Random 3rd party strobes

  
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mattkrass
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Sep 16, 2012 09:29 as a reply to  @ drzenitram's post |  #13

Hey Everyone,

As soon as I got home I put the lens in a sealed bag with rice and left it overnight without the caps. When I first put it in I could see it was still foggy but a bit less so than in Florida. I looked at it this morning and it looks better but still hazy around the edges. Also there is a build up of something on the focus ring and zoom ring, it looks like dried water spots. I'm going to leave it in the rice the rest of today and see how it looks tonight.

Matt


Matt Krass
Design Engineering Nerd | Canon EOS 6D | Canon EOS Rebel T2i | 24-105mm f/4L | 18-135mm f/3.5-5.6 | 75-300mm f/4-5.6 | 'Nifty' 50mm II f/1.8

  
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Unregistered.Coward
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Sep 16, 2012 09:55 |  #14

mattkrass wrote in post #14996044 (external link)
The alarming part was that there were water droplets on the lens, but the rest of the bag is dry

Glass doesn't absorb water. Glass has a low thermal conductivity value.

Your lens body contains a volume of colder air which can't readily mix with the warmer ambient air so the surfaces of the lens (container) stay colder for a longer period of time which produces even more condensation.


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mattkrass
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Sep 16, 2012 13:52 |  #15

Unregistered.Coward wrote in post #14998385 (external link)
Glass doesn't absorb water. Glass has a low thermal conductivity value.

Your lens body contains a volume of colder air which can't readily mix with the warmer ambient air so the surfaces of the lens (container) stay colder for a longer period of time which produces even more condensation.

I understand why the condensation formed, I'm just worried about the fact that the lens was apparently exposed to a significant amount of moisture and I have no idea how. The rest of the equipment in the bag did not have any visible moisture on it. I'm just hoping I didn't accidentally dunk the bag in a puddle somewhere with the corner that lens was in.

Hopefully this is the end of this story, I'll see how the lens looks tonight.

Thanks everyone,
Matt


Matt Krass
Design Engineering Nerd | Canon EOS 6D | Canon EOS Rebel T2i | 24-105mm f/4L | 18-135mm f/3.5-5.6 | 75-300mm f/4-5.6 | 'Nifty' 50mm II f/1.8

  
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