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Archive 2013effect of lens fungus?
p.1 #1effect of lens fungus?
guys, need your help a little. I know we should prevent fungus growing on our lens as much as possible.
Anyway a 2nd hand leica 90 elmarit just came up in the local classified, however with a description of a little fungus mark on the lens (inner element).. I am interested in the lens, but i dont want the fungus to spread further, or worse, if it jumps to my other lens collection since i will keep it in the same drybox as my other lens collection.. i have no idea nor experience with fungus on lens... should i wait for a good copy (may take a lot of time), or is the fungus localized and it shouldn't grow further with proper drybox control... your help is much appreciated.. Thank you
Anyway a 2nd hand leica 90 elmarit just came up in the local classified, however with a description of a little fungus mark on the lens (inner element).. I am interested in the lens, but i dont want the fungus to spread further, or worse, if it jumps to my other lens collection since i will keep it in the same drybox as my other lens collection.. i have no idea nor experience with fungus on lens... should i wait for a good copy (may take a lot of time), or is the fungus localized and it shouldn't grow further with proper drybox control... your help is much appreciated.. Thank you
Dec 23, 2013 at 09:01 PM
p.1 #2effect of lens fungus?
I wouldn't mess with it - find another without it.
Dec 23, 2013 at 09:36 PM
p.1 #3effect of lens fungus?
Depends on how bad it is. You will certainly get a loss of contrast and resolution if there's a lot of fungus, but a little on one element probably won't make a noticeable difference.
Don't worry about the fungus spreading to your other lenses. Spores are always in the air looking for a suitable place to grow. Your drybox takes care of that problem. Exposing the lens to uv light will also kill any living fungus.
If you're going to buy this lens, just make sure you get a good deal. Most buyers are scared off by fungus. You can also have it professionally cleaned for $100-150. Don't worry about the fungus leaving permanent damage behind (etched into the glass). I've only ever seen this in pretty extreme cases.
Don't worry about the fungus spreading to your other lenses. Spores are always in the air looking for a suitable place to grow. Your drybox takes care of that problem. Exposing the lens to uv light will also kill any living fungus.
If you're going to buy this lens, just make sure you get a good deal. Most buyers are scared off by fungus. You can also have it professionally cleaned for $100-150. Don't worry about the fungus leaving permanent damage behind (etched into the glass). I've only ever seen this in pretty extreme cases.
Dec 24, 2013 at 01:46 AM
p.1 #4effect of lens fungus?
Bid the seller back the cost of professional cleaning. If they are offended so be it.
Take a chance. Makes life more enjoyable.
Take a chance. Makes life more enjoyable.
Dec 24, 2013 at 05:50 AM
p.1 #5effect of lens fungus?
Normally, I would pass on a lens with a description that includes fungus. If there's some particular reason to still consider buying it, then you should have a chance to get a good look at it, before handing over the cash.
There are many problems that get classified as fungus; including, fungus (of course), separation, bubbles in glass, condensate, oil droplets, "Schneideritis", and etc. The following threads provide likely examples of all of these conditions.
FUNGUS! https://www.fredmiranda.com/forum/topic/1237616/
hey guys, is this fungus? https://www.fredmiranda.com/forum/topic/1198658
Stopping fungus with UV, any experiences? https://www.fredmiranda.com/forum/topic/1195558/
[fungus vs condensate] https://www.fredmiranda.com/forum/topic/1221357/
Bubbles or Fungus? https://www.fredmiranda.com/forum/topic/1074184/
So..........fungus? https://www.fredmiranda.com/forum/topic/1088887/0?keyword=fungus#10377986
Lens fungus? https://www.fredmiranda.com/forum/topic/1143160/
What's this on my lens? https://www.fredmiranda.com/forum/topic/1038583
Would this be fungus? https://www.fredmiranda.com/forum/topic/1023548/
Fungus in lens https://www.fredmiranda.com/forum/topic/1013150/
[fungus vs separation] https://www.fredmiranda.com/forum/topic/970437/
Here's what Carl Zeiss has to say,
In optical instruments, fungus growth is particularly dreaded. This is mold spreading inside the units and resulting in a permanent clouding and hence in destruction of the optics.
All binoculars and riflescopes from Carl Zeiss are provided with a built-in protection against fungus growth. Despite this,
it is advisable to store optical instruments – in particular in tropical conditions - in a dry and/or cool place to prevent the
growth of fungus.
[ref. Zeiss] http://corporate.zeiss.com/about/en_au/contact/faq/little-abc-of-optics.html#-b--font-color--blue--f--font---b-
There are many problems that get classified as fungus; including, fungus (of course), separation, bubbles in glass, condensate, oil droplets, "Schneideritis", and etc. The following threads provide likely examples of all of these conditions.
FUNGUS! https://www.fredmiranda.com/forum/topic/1237616/
hey guys, is this fungus? https://www.fredmiranda.com/forum/topic/1198658
Stopping fungus with UV, any experiences? https://www.fredmiranda.com/forum/topic/1195558/
[fungus vs condensate] https://www.fredmiranda.com/forum/topic/1221357/
Bubbles or Fungus? https://www.fredmiranda.com/forum/topic/1074184/
So..........fungus? https://www.fredmiranda.com/forum/topic/1088887/0?keyword=fungus#10377986
Lens fungus? https://www.fredmiranda.com/forum/topic/1143160/
What's this on my lens? https://www.fredmiranda.com/forum/topic/1038583
Would this be fungus? https://www.fredmiranda.com/forum/topic/1023548/
Fungus in lens https://www.fredmiranda.com/forum/topic/1013150/
[fungus vs separation] https://www.fredmiranda.com/forum/topic/970437/
Here's what Carl Zeiss has to say,
In optical instruments, fungus growth is particularly dreaded. This is mold spreading inside the units and resulting in a permanent clouding and hence in destruction of the optics.
All binoculars and riflescopes from Carl Zeiss are provided with a built-in protection against fungus growth. Despite this,
it is advisable to store optical instruments – in particular in tropical conditions - in a dry and/or cool place to prevent the
growth of fungus.
[ref. Zeiss] http://corporate.zeiss.com/about/en_au/contact/faq/little-abc-of-optics.html#-b--font-color--blue--f--font---b-
Dec 24, 2013 at 07:09 AM