Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-04-2010, 09:31 AM   #1
Veteran Member
Docrwm's Avatar

Join Date: Sep 2010
Location: Somewhere in the Southern US
Photos: Gallery | Albums
Posts: 11,275
When fungus attacks?

When fungus has attacked a lens and the lens was stored in a container, box, lens case, etc. do you typically throw that item out as a potential source of contamination?

I understand that hard plastic and metal items can be adequately cleaned. But what about nylon and other materials used for cases or porous materials used for storage?

12-04-2010, 10:58 AM   #2
Site Supporter
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,894
What would be the point? If a lens is stored properly it won't get fungus, stored improperly it will get fungus. Fungus needs 3 things to grow: darkness, moisture, and a food source. Dust provides the food source, all you need to add are darkness and a humid environment. Spores are present everywhere, the lens will already have spores in it by the time it leaves the factory.
12-04-2010, 12:02 PM   #3
Veteran Member
Docrwm's Avatar

Join Date: Sep 2010
Location: Somewhere in the Southern US
Photos: Gallery | Albums
Posts: 11,275
Original Poster
QuoteOriginally posted by boriscleto Quote
What would be the point? If a lens is stored properly it won't get fungus, stored improperly it will get fungus. Fungus needs 3 things to grow: darkness, moisture, and a food source. Dust provides the food source, all you need to add are darkness and a humid environment. Spores are present everywhere, the lens will already have spores in it by the time it leaves the factory.
Well, concentration of spores, proven positive environment, I could go on but there is a point
12-04-2010, 06:26 PM   #4
Veteran Member




Join Date: Oct 2010
Location: Taiwan
Photos: Gallery | Albums
Posts: 1,075
Take two disposable water bottles. Empty both of water. Put the cap on one and leave the cap off the other. Store them next to each other (it doesn't even need to be a dark place). Because the open one has airflow and can dry out it will be fine (possibly dusty) indefinitely. Open the capped bottle after a week, it will be nasty. Why? because the air was trapped. But are you going to throw out the other water bottle that was stored next to it?

The same is true with lenses. I don't believe that there is any specific lens fungus. Lenses try to be airtight but that means it's difficult for air to get out. If you live in a humid environment or use them with as much as a drop of rain then you could have water in the lens. If you then store it in camera bag then you might get fungus.

12-05-2010, 07:56 AM   #5
Veteran Member
Docrwm's Avatar

Join Date: Sep 2010
Location: Somewhere in the Southern US
Photos: Gallery | Albums
Posts: 11,275
Original Poster
Interesting responses to this one. It seems to me that people are taking an odd view about mold and spores. Since they "are everywhere" controlling or attempting to control the presence or amount of spores is to be ignored and instead we should focus solely on stopping them from becoming active via humidity control and the presence of UV light.

Seems odd. So, as an analogy: Why not use a soiled tissue (I only sneezed in it once) because you've had your flu shot and are taking your vitamins. Flu and Cold germs are everywhere anyway so lets not worry about that end of the equation - that would be stupid. Lets just worry about treatment and other preventative measures

No, I'll take my own advice and throw out porous materials and clean non-porous items that have been the site of mold infestations - thank you very much.
12-05-2010, 09:53 AM   #6
Veteran Member




Join Date: Oct 2010
Location: Taiwan
Photos: Gallery | Albums
Posts: 1,075
You're welcome to throw out a perfectly good camera bag but it's not the problem. The reason that I've suggested humidity control is that mold doesn't grow in dry environments (warmth is also bad). That's the key to mold prevention. Keep your lenses in low humidity environments and keep them dry when using them.
12-06-2010, 02:39 PM   #7
Veteran Member
Docrwm's Avatar

Join Date: Sep 2010
Location: Somewhere in the Southern US
Photos: Gallery | Albums
Posts: 11,275
Original Poster
QuoteOriginally posted by abacus07 Quote
You're welcome to throw out a perfectly good camera bag but it's not the problem. The reason that I've suggested humidity control is that mold doesn't grow in dry environments (warmth is also bad). That's the key to mold prevention. Keep your lenses in low humidity environments and keep them dry when using them.
Not ignoring humidity control at all. Merely pointing out that the vector may need to be addressed too.
12-06-2010, 03:29 PM   #8
Banned




Join Date: Oct 2007
Location: Savannah, U.S./Baguio City, P.H.
Posts: 5,979
QuoteOriginally posted by Docrwm Quote
Not ignoring humidity control at all. Merely pointing out that the vector may need to be addressed too.
so by that logic you should not even use a camera bag, because it likely has mold spores already in it when you buy it. its infected, its porous. it must be tossed. how often will you throw away your hard earned bags and cases because they are infected already? will you have a set schedule for wasting your money? the others are right. you cant really get rid of it, you can only hope to control it. I just don’t see how your view will do you any good in the end.

Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
fungus, k-mount, lens, materials, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
AAARRRGGHHH!!! The dreaded fungus attacks! ismaelg Pentax SLR Lens Discussion 23 12-04-2010 01:31 PM
New N. Korean Attacks mikemike General Talk 31 11-30-2010 02:29 PM
Right attacks the right jeffkrol General Talk 22 08-10-2010 09:06 AM
Crocodile attacks Photographer kevinschoenmakers General Talk 6 12-16-2009 11:50 AM
Old LBA attacks long Transit Pentax SLR Lens Discussion 8 11-09-2008 09:18 PM



All times are GMT -7. The time now is 04:57 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top