Question about Mamiya Macro 140mm f/4.5 L-A for RZ67

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Fungus inside lens - Mamiya Macro 140mm f/4.5 L-A for RZ67

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If it's mild then it won't have any appreciable effect on your photographs, so leave it until it's worse. The fungus can be slowed or killed by sunlight or by exposing the lens element to ultra violet light.

If it's really bad then you have to decide whether it's worth a professional strip down and clean. You'd have realistic two choices: to remove the fungus and replace all lubricants and canada balsam lens cement with modern antifungal equivalents but leave the damaged lens coatings as they are or to do the same and also have affected lens groups replaced with new ones or have the old ones re-coated. The first option is expensive, the second option is very expensive.

Posted on Aug 01, 2009

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Posted on Jan 02, 2017

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How to clean fungi on lens


The success o cleaning fungus off a lens depends on how far the growth has gone.Light fungus on the outside surface off the lens can be removed by wiping a thin smear of Dove cream on the affected surface and then lightly removing using cotton buds. Follow this with a light polish using lens cleaning cloth. Never use cleaning tissue, it will scratch. A useful tip is to wash the lens cloth in hot water and dish washing liquid and rinse and ry before use. Have a spare clean cloth ready.
If the fungus is to heavy to remove you will still get some improvement using this cleaning method. If the fungus is on the inside it is up to you to decide whether to dismntle the lens.

Mar 03, 2015 | Vivitar 100-400mm f/4.5-6.7 Series Lens

Tip

How to avoid fungus on Digital Camera Lens?


The dreaded fungus is something that bothers every photographer. I have suffered from it before, and every coming rain gives me constant worries of possibilities of fungus growing somewhere inside my lenses. I am more vulnerable to fungus than most people because I don't think much about taking out the camera to get some good shots even if it has been raining a bit, and have often got plenty of rain drops on the camera and the lens therefore.

Where does fungus comefrom?
  • Fungus spores are everywhere and germinate under suitable environmental conditions:
  • Relative humidity of at least 70% (more than 3 days)
  • No or little airflow
  • Darkness
  • Nutrients (textile lint, traces of grease, varnish, dust and dirt)
  • Temperatures between 10 and 35°C
How can fungus be avoided?
  1. Silica Gel. This seems to be the easiest and common way to avoid fungus, but I haven't had much success with it either.
  2. . Store the lenses in an airtight container. Again, you may need to put a few Silica Gels in the container. Putting too many of Silica Gel is known to dry out the lubricants in the lens, so you need to use your discretion with quantity of the Silica Gel.
  3. . A popular idea is to install a low wattage tungsten bulb in the closet where you keep the lens. This will keep the place warm and dry, preventing the fungus. This is known to work.
  4. . Store the lens in transparent container. Fungus is known to fear light and love darkness. Also make sure that the lenses are not stored in leather bags, as leather can easily attract fungus.
  5. And finally, of course, the best way to prevent fungus is to get out and shoot more often.
  6. After the work is done, immediately clean the instruments. If possible, you can use a fan or blower to facilitate evaporation of surface moisture.




on Feb 13, 2010 | Cameras

2 Answers

How to clean sigma 500mm 4.5 fungus


Do you have a lens collimator and other gear needed to ensure proper alignment when reassembling the lens? If not, try this. Put the lens inside a window where it receives directly sunlight. Yes, you'll probably have to move the lens every few hours to it continues to receive direct sunlight. Do this for a day or two. If the fungus persists then take the lens to a reputable camera shop and have a properly trained and equipped professional clean the lens.

Jul 20, 2014 | Sigma Cameras

2 Answers

Clean inside lens fungus


If you realy have fungus in your zoom lens, you can't do anything. If it does not show on the pictures, just keep the lens dry. (use silica gel) If you want it it be repaired, it will cost more than an new lens.

Oct 05, 2013 | Nikon Zoom-Nikkor 55-200mm f/4-5.6G ED...

2 Answers

How to remove fungus inside inner Tamron's lens


My phone every time I want to dowload any thing from the web it doesn't support

May 06, 2012 | Cameras

1 Answer

POSSIBLE MOLD INSIDE CAMERA LENS


It is lens fungus and you're correct in your assumption that it's uneconomical to professionally repair on your lenses. But it need to be pretty bad before it affects image quality so don't junk them just yet.

Some types of lens fungus can be killed simply by leaving the lens out in sunlight, but I'd suggest that it's better to leave them exposed to the indirect sunlight on a bright overcast day to prevent any chance of sharply focussed light burning the inside of the lens. Killing the fungus won't remove the dead stuff but it prevents the problem getting worse.

May 29, 2010 | Quantaray 100-300mm F4.5-6.7 Zoom Lens for...

1 Answer

Sigma 70-300 4-5.6 DL has some fungus & blur


Fungus etches the glass. This cannot be fixed by just removing the fungus. The lens has to be resurfaced, calibrated, coated and
well, you get the idea. lots of expensive precision equipment and a jig to recalibrate the focusing after you do all that.
Another 70-300 on Ebay is much less expensive.

Dec 18, 2009 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

Sigma 500mm lens need to remove funges from inside lens,but funges not showing on photographs is it possible to strip


That is a manufacturer repair. While you may be able to remove the fungus, the fungus may have etched the coating on the lens and still show . The best way to fix that is replace those lens elements that are effected.

Oct 30, 2009 | Cameras

1 Answer

Clean fungus rear lens


Oh This Could be a problem. But try just wiping it with a lens cleaning kit. If that dosnt work take it to a camera shop and let them work on it.

Aug 28, 2009 | Nikon Telephoto AF Micro Nikkor 105mm...

1 Answer

Fungus inside lens


There's nothing but normal air inside your SE. Nikon will service this for you under their No-Fault warranty. See Nikonusa.com for details.

Dec 17, 2007 | Nikon Superior E Binocular

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