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> Fungus removal |
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#1
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Fungus removal
I’ve managed to dismantle an old lens that has been attacked by fungus. What is the best way to clean the affected glass? Will a simple lens cleaner do, or is there a better alternative? The lens is Japanese, from the mid ‘60s, and is coated. It is not of any great value. Thanks.
Alex Sent from my iPhone using Tapatalk Pro |
#2
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I heard that leaving the lens in bright sunlight can kill the fungus.
For you and me, that would mean sending it somewhere else, judging by the current weather Another option is a peroxide solution....used in hair bleach.....again, not something i use being almost bald Mike |
#3
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Fungus removal
Thanks, Mike. I’m sure I’ve heard peroxide mentioned before. I don’t know if the fungus is alive, or dead, but it has to come off before I can use the lens. It’s not worth sending for repair, but it would be nice to clean it if possible.
Alex Sent from my iPhone using Tapatalk Pro |
#4
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Try all the usual cleaners first off washing up liquid, alcohol, household bleach or window cleaner. I cleaned fungus off a hasselblad lens with bathroom mould killer spray. It was the rear element I dont think it was coated. Sometimes it is not fungus on the glass or on the coating the marks are actually etched in. These type of marks cannot be removed by cleaning using soaps or mild solvents. I would try a small area of the lens first with a cotton bud soaked in any spray glass cleaner or just use a lens wipe. If the coating is damaged the worse you could do is wipe away the damaged coating and hopefully the marks. There is a good video on youtube showing you how to clean a lens by The Angry Photographer I don't like him but his advise on cleaning a lens is good.
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"Tea is surely the king of all drinks. It helps against the cold, it helps against the heat,against discomfort and sickness, against weariness and weakness". Heinrich Harrer. |
#5
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Alex,
Some good info here on the Leica forum, esp. post no. 10: https://www.l-camera-forum.com/topic...7-lens-fungus/ Looks like you use alcohol to clean it, then sunlight to kill the stuff. For the latter, send it to me -- we haven't had rain since June
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Regards, Svend |
#6
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Thanks Norm and Svend. I’m going to tackle it this evening. I will start gently to see how it goes.
Alex Sent from my iPhone using Tapatalk Pro |
#7
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I normally use isopropyl alcohol + cotton buds and the usual lens cleaning issues - works for me.
It is also advisable to store lenses in a place of strong sunlight with their lens caps and UV filters removed - difficult! The idea being that UV light kills fungus spores. Neil.
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"The aim of art is to represent not the outward appearance of things, but their inward significance." Aristotle Neil Souch |
#8
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Quote:
Good luck!
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Regards, Svend |
#9
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Thanks Neil and Svend. I have isopropyl available. Poor storage is the problem with this lens. Entirely my fault, I’m afraid. I wasn’t paying enough attention.
Alex Sent from my iPhone using Tapatalk Pro |
#10
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Don't forget tanning lamps, if you have access to one. Less effective than sunlight in terms of time (cyanotype experience speaking) but still a substitute.
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