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11-05-2009, 02:59 AM   #1
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what does lens fungus look like?

I regularly see lenses for sale that have various claims like no fungus and no oil on the iris.
So my question is how do you inspect a lens, and what am I looking for?
Is there somewhere I can find pictures of faults to look for?
Alistair

11-05-2009, 04:45 AM   #2
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It can vary from this:



To this:



But be careful, fungus can be contagious.
11-05-2009, 10:14 AM   #3
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Love that second shot!
11-05-2009, 11:02 AM   #4
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Holy... How could the second one get so bad???? Someone left that lens in a bucket of water for a few years?? Fungus will start out as small specks forming into a "spiderweb", that is how you know you have fungus.

11-05-2009, 11:03 AM   #5
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it's looking at me!
11-05-2009, 11:19 AM   #6
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Come on !

I'll bet a bucket of dimes ( a very small bucket though) that the second pic is bogus ( mushroom cap isserter in lesn and shown from bottom side)
11-05-2009, 12:05 PM   #7
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QuoteOriginally posted by Erasmo Quote



That lens has been to Mt. Doom, be careful

11-05-2009, 02:11 PM   #8
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QuoteOriginally posted by mba1971 Quote
Come on !

I'll bet a bucket of dimes ( a very small bucket though) that the second pic is bogus ( mushroom cap isserter in lesn and shown from bottom side)
Of course. For demonstration purposes and because we all remember that mushrooms are fungi the shot was arranged to make a point. But only observant ppl like mba1971 not only notice but make sure the rest of us do.

Mark me down as one of those who had no idea what it was.

11-05-2009, 06:02 PM   #9
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QuoteOriginally posted by Erasmo Quote
It can vary from this:



To this:



But be careful, fungus can be contagious.
Is that a wild mushroom growing in there?Use it for Pizza topping
11-05-2009, 07:11 PM   #10
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Maybe we could recycle old lenses into mushroom farms
11-05-2009, 10:08 PM   #11
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That second picture is most likely has been photoshopped for those who think fungus can grow into something edible haha. Nice post though.
11-08-2009, 03:58 PM   #12
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Original Poster
Well I am disappointed to find out that if times get hard the fungus is not edible but , hay-ho you can't have everything
On a more serious note I have a lens which seems to give images with no apparent faults yet the lens when viewed with the iris wide open and the light from the back [mount side] appears to have water drops in the inside of the front glass??
any ideas? BTW it is not water, I have not been diving,or dropped the lens in a bucket, or in a glass of vodka [it is clear] if it was beer it would be brown.
Alistair

Last edited by adwb; 11-08-2009 at 03:58 PM. Reason: can't spell
11-09-2009, 10:11 PM   #13
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Does anybody have pictures of a lens with the start of fungus

I have a lens that has a small spot inside, spiderweb -like. I will try to take a picture so that somebody might be able to tell me if it is fungus or not.

Thanks,

Juan

Last edited by jotarou1; 11-09-2009 at 10:13 PM. Reason: Didn't see pictures prior to posting. So removed questions asking for pictures.
03-26-2010, 03:56 AM   #14
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I also searching lens info. And i wanted if any one have good info of this program so please post here..
03-26-2010, 04:50 AM   #15
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Note: This is a fair closeup, at good shooting and light angle. Fungus could be barely visible on the lens by naked eye. Severe fungus at more common magnification might look different.



This image is taken after several failed tries to clean the fungus with ethanol, acetone, gas lighter benzin and water.
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