what does lens fungus look like?

adwb · 11-05-2009, 02:59 AM

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

Erasmo · 11-05-2009, 04:45 AM

It can vary from this:

To this:

But be careful, fungus can be contagious.

reeftool · 11-05-2009, 10:14 AM

Love that second shot!

LeDave · 11-05-2009, 11:02 AM

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.

Eruditass · 11-05-2009, 11:03 AM

it's looking at me!

mba1971 · 11-05-2009, 11:19 AM

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)

mikeSF · 11-05-2009, 12:05 PM

Originally posted by Erasmo

That lens has been to Mt. Doom, be careful

imtheguy · 11-05-2009, 02:11 PM

Originally posted by mba1971

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.

Barnster · 11-05-2009, 06:02 PM

Originally posted by Erasmo

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

mba1971 · 11-05-2009, 07:11 PM

Maybe we could recycle old lenses into mushroom farms

khaz0r · 11-05-2009, 10:08 PM

That second picture is most likely has been photoshopped for those who think fungus can grow into something edible haha. Nice post though.

adwb · 11-08-2009, 03:58 PM

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

jotarou1 · 11-09-2009, 10:11 PM

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

Albert1234 · 03-26-2010, 03:56 AM

I also searching lens info. And i wanted if any one have good info of this program so please post here..

ytterbium · 03-26-2010, 04:50 AM

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.

11-05-2009, 02:59 AM	#1
adwb Veteran Member Join Date: Sep 2009 Location: Bristol UK Photos: Gallery Posts: 1,636	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

11-08-2009, 03:58 PM	#12
adwb Veteran Member Join Date: Sep 2009 Location: Bristol UK Photos: Gallery Posts: 1,636 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
jotarou1 Junior Member Join Date: May 2009 Location: CA Posts: 39	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.

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11-05-2009, 04:45 AM	#2
Erasmo Senior Member Join Date: Jul 2008 Location: The Netherlands Posts: 191	It can vary from this: To this: But be careful, fungus can be contagious.

11-05-2009, 10:14 AM	#3
reeftool Pentaxian Join Date: Dec 2007 Location: Upstate New York Photos: Gallery \| Albums Posts: 9,553	Love that second shot!

11-05-2009, 11:02 AM	#4
LeDave Veteran Member Join Date: Jun 2009 Location: Minneapolis - St. Paul Photos: Gallery Posts: 3,067	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
Eruditass Veteran Member Join Date: Jul 2009 Photos: Gallery Posts: 2,207	it's looking at me!

11-05-2009, 11:19 AM	#6
mba1971 Senior Member Join Date: Oct 2009 Location: Smalltown, Quebec Photos: Albums Posts: 179	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
mikeSF Pentaxian Join Date: Jan 2009 Location: East Bay Area, CA Photos: Gallery Posts: 6,620	Originally posted by Erasmo That lens has been to Mt. Doom, be careful

11-05-2009, 02:11 PM	#8
imtheguy Site Supporter Join Date: Mar 2009 Location: Virginia Beach Photos: Gallery \| Albums Posts: 2,950	Originally posted by mba1971 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
Barnster Veteran Member Join Date: Jun 2009 Location: Mid North Coast,Australia Photos: Gallery Posts: 1,016	Originally posted by Erasmo 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
mba1971 Senior Member Join Date: Oct 2009 Location: Smalltown, Quebec Photos: Albums Posts: 179	Maybe we could recycle old lenses into mushroom farms

11-05-2009, 10:08 PM	#11
khaz0r Junior Member Join Date: Oct 2009 Location: Sydney Posts: 31	That second picture is most likely has been photoshopped for those who think fungus can grow into something edible haha. Nice post though.

03-26-2010, 03:56 AM	#14
Albert1234 New Member Join Date: Mar 2010 Posts: 1	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
ytterbium Veteran Member Join Date: Jan 2008 Posts: 1,076	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.