Lens mould

Discussion in 'Canon Lens Discussion' started by Anndrew, Mar 15, 2026.

  1. Anndrew

    Anndrew New Member

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    Apr 13, 2021
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    Equipment:
    Canon 5D MK111 plus some lenses
    I have a few spots of mould on an expensive lens

    Is there any one in Sydney that can clean it profesionaly ?
     

  2. Craig Sherriff

    Craig Sherriff Well-Known Member Site Supporter

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    60D,350D 1dmark3, T70, AV1, lenses ranging from 28mm to 600 mm, canonet Junior, Canonet QL 25, Mamiya C3 and 3 lens sets,Mamiya 645 pro TL and 3 lenses.Mamiya universal press camera and 4 lenses, Mamiya RB67 Pro S and 5 lenses, Pentax MG and various lenses, Toyoview 4 * 5 inch large format camera,Calimat C1 8*10 inch ultra large format camera.
    Andrew, I live in Tasmania and such services are virtually non existant, personally I clean my own lenses so I looked up what was on google, this is what I found "
    Sydney Camera Repairs
    They offer top-notch repair services for all photographic equipment. With 40+ years of experience, our expert technicians ensure exceptional service for cameras, lenses, and accessories."All the best with it.Craig S.

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    Last edited: Mar 16, 2026
  3. Anndrew

    Anndrew New Member

    Joined:
    Apr 13, 2021
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    Equipment:
    Canon 5D MK111 plus some lenses
    Thanks Craig much appreciated
     
  4. Anndrew

    Anndrew New Member

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    Apr 13, 2021
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    Equipment:
    Canon 5D MK111 plus some lenses
    I had it looked at and theres no going back he said its on all the elements
     
  5. Caladina

    Caladina Well-Known Member

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    7artisans 7.5mm m, Laowa 100mm macro ef, laowa 9mm zeroD m, Vintage M42 Lenses:
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    have you tried leaving it in full sun for a day? i know people with older lenses use this method to kill off mold / fungus
     
  6. Marcus Rowland

    Marcus Rowland Member Site Supporter

    Joined:
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    Location:
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    Equipment:
    Eos 600D, Canon 18-55mm, Canon 50mm f1.8, lots of adapters for other lenses
    Nikon D7000, Nikon D610, Nikon 18-70, Nikon 24-85, Vivitar 19-35, Tamron XR 28-300mm, Nikon AF 50mm 1.4, Samyang 8mm f3.8, Sigma EX 50 2.8D macro, Sigma APO 170-500 5-6.3D, Tamron Adaptall 500mm mirror, etc.
    Panasonic Lumix G1, 14-42 3.5-5.6, lots of adapters
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    I've heard of people trying sunlight, it doesn't work well in Britain for fairly obvious reasons, but also most of the sun's UV is blocked fairly well by glass, and it won't clean out any damage the fungus has done. My impression is that it may work if the fungus is close to the outer elements, but not if it's deep inside.

    Something I've thought of doing a few times is building a proper UV sterilizing box with a UV-C light (which does work through glass to some extent) with interlocks to make it impossible to open it with the lamp turned on. There might be heat problems and I would be a bit worried about trying this with lenses that have internal electronics because it might possibly zap them, but it might be a good answer for older glass/metal lenses. But even then there might be damage left after the fungus is zapped.
     

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