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TP: How to identify fungus...?

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keesey View Drop Down
Groupie
Groupie

Joined: 03 March 2007
Location: United Kingdom
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Posts: 89 		Post Options Post Options   Quote keesey Quote  Post ReplyReply Direct Link To This Post Posted: 08 July 2007 at 19:01
Originally posted by royd63uk royd63uk wrote:

Hi
I am no expert in lens cleaning and definately not fungus.But i recall reading somewhere that "microwaving" them will stop the fungus spreading if noticed soon enough,but wont remove what is there.
Roy


You would need to fully disassemble the lens to do this as microwaving metal objects is not a good idea. I think the UV light from the sun would be the easiest method.

Did they give a reason why only 30 mins?
A100 | Minolta 28-85/3.5-4.5 | Minolta 50/1.7 | Minolta 70-210/4 | Minolta 75-300/4.5-5.6 | Sigma 170-500 APO | Sony 18-70/3.5-5.6 | Teleplus MC4
 



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afidalgo View Drop Down
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Joined: 05 January 2007
Location: Portugal
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Posts: 457 		Post Options Post Options   Quote afidalgo Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2007 at 09:46
Originally posted by keesey keesey wrote:


Did they give a reason why only 30 mins?


Yes. So that the lens doesn't overheat. It can damage the lens (as leaving one a couple of hours on the sun probably would).
Note that they recommended this for the lens that show NO fungus as a precaution. The one with visible fungus must get the full treatment...disassembling, cleaning, ultra-sounds, reasembling...

Edited by afidalgo - 09 July 2007 at 09:47
Sony A100, Sony 18-70 (kit), Minolta 70-210 f/3.5-4.5 Minolta 70-210 f/4 (in repair?), Minolta 50 f/1.7, 2Gb CF 133x, Lowepro Bag
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cooloregon View Drop Down
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Joined: 09 December 2008
Country: United States
Location: Oregon
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Posts: 9 		Post Options Post Options   Quote cooloregon Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2009 at 08:24
Just a thought but how about a sun tanning booth.
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nigelbrooks View Drop Down
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Joined: 15 March 2006
Country: England
Location: Ealing, London
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Posts: 8526 		Post Options Post Options   Quote nigelbrooks Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2009 at 09:38
Welcome to Dyxum Steve.

Brilliant idea! Especially those which have the 'hi-intensity' pods.

Remember though that this will affect only the visible fungal spores and not those 'tucked away' in helicoids etc.
I've been away!
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fophotofile View Drop Down
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Joined: 26 October 2007
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Posts: 415 		Post Options Post Options   Quote fophotofile Quote  Post ReplyReply Direct Link To This Post Posted: 02 April 2009 at 21:53
No Biggie,

But one should consider that the fungus just loves the glue between doublets, and just about every lens has a doublet, so thinking I can clean this, is often those "Famous Last Words"..

Fear the Fungus

been there, done that..
regards
fo

Edited by fophotofile - 02 April 2009 at 21:54
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KoprivaMedia View Drop Down
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Joined: 22 May 2009
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Location: Tacoma, WA
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Posts: 1796 		Post Options Post Options   Quote KoprivaMedia Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2009 at 09:12
Not that I've had any problems, but how easy is disassembly of more modern models? I ask out of curiosity, but in theory could you do the same thing with a lens made in the last few years?
KoprivaMedia
 



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waleskeg View Drop Down
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Joined: 09 April 2007
Country: United States
Location: Metro Phila
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Posts: 2916 		Post Options Post Options   Quote waleskeg Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2009 at 13:33
This was posted yesterday:

http://www.dyxum.com/dforum/accidental-fungus-irradicator_topic47545_post516544.html?KW=#516544

http://www.flickr.com/photos/kenwales
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conory View Drop Down
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Joined: 12 March 2009
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Posts: 605 		Post Options Post Options   Quote conory Quote  Post ReplyReply Direct Link To This Post Posted: 20 July 2009 at 22:39
So leaving my lenses out everyday for about 30 mins everyday, will help reduce fungus ??

I think ill start doing this, my lenses are always left in their cases with UV filter and both caps on, is there anything wrong with this, fungus wise ??
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youpii View Drop Down
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Joined: 03 March 2009
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Posts: 152 		Post Options Post Options   Quote youpii Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2010 at 12:47
I have "something" in the Minolta 16/2.8 that I just bought

Not sure if this is a small fungus or a thick dust. What do you think?
http://flickr.com/ephankim/
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nigelbrooks View Drop Down
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Joined: 15 March 2006
Country: England
Location: Ealing, London
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Posts: 8526 		Post Options Post Options   Quote nigelbrooks Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2010 at 13:02
Strange to see one isolated 'fluffy' bit like that. It might just be 'big dust' and well worth a clean.

If you just purchased it, I would have a word with the seller.
I've been away!
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youpii View Drop Down
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Joined: 03 March 2009
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Posts: 152 		Post Options Post Options   Quote youpii Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2010 at 13:34
I bought it online. The seller says it's "just a big dust". I not sure if I should return the lens.
http://flickr.com/ephankim/
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horizon View Drop Down
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Joined: 11 September 2010
Country: Australia
Location: Coral Coast Qld
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Posts: 1010 		Post Options Post Options   Quote horizon Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2010 at 13:45
A number of years ago my old SLR 35mm film camera equipment got fungus in the lenses and body. I did attempt to try and resolve the fungus problem by placing in direct sunlight for about 30min a day, but the infection was gone too far. (I loaned the camera to a friend who lived in a rain forest area and the infection got too bad in about 3 weeks) The age of the equipment and replacement costs used made it not viable to clean.

Anyway now for future prevention I use Silica Gel packs that have a heating element in so when the gel needs to be dried, I can plug it in direct to power and these are then dry ready for the next session, drying time can be between 4 - 10 hours. They are affordable and easy to use.

For the Dyxum members in Australia, the dehumidifier versions that are dried by connecting to power are available through Bunnings for about $50. Also silica gel available link below and in bulk volume if required.

dehumidifier

Silica Gel

Regards,
Craig
Please dont edit my photo's
Wildlife Horizons
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youpii View Drop Down
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Posts: 152 		Post Options Post Options   Quote youpii Quote  Post ReplyReply Direct Link To This Post Posted: 21 November 2010 at 06:57
I went to a couple of 2nd-hand shops to get an opinion. It's only a large dust.
http://flickr.com/ephankim/
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nigelbrooks View Drop Down
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Posts: 8526 		Post Options Post Options   Quote nigelbrooks Quote  Post ReplyReply Direct Link To This Post Posted: 21 November 2010 at 08:14
Good news, enjoy the lens
I've been away!
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