Fungus question

hi jim-

in general, you should stay away from a lens with any fungus whatsoever.

but if you're determined to buy it, leave the lens out in direct sunlight for several days to kill the fungus. it won't disappear, but it should stop growing.

as for the effect on your photos, it's probably minimal. it depends on the location and the amount of fungus. if it's off to the edge of the front element, it should be ok. i've shot with a couple of lenses that had fungus on them (the drawback of living in a tropical country) with no visible issues, but this was before digital, before i could see every little defect and spec  

is it possible for you to take some test photos, or to ask for them?

ricky

 

There is no cure for the damage done by fungus. Leaving the lens in the sun (or other source of UV) might kill the fungus, but the damage done to the coatings of the lens is permanent. As previously said, if it is around the edges, don't worry. Even the center isn't a big deal, if as you say, you have to look really hard to see it.
Years ago, I did some test shots for a friend. He had bought an older 300mm view camera lens for $60. It was worth about $3000. Only problem, there was a chunk of glass missing from the rear element. I do mean a chunk and it was an ugly looking gash. I did the tests, he paid for the 8x10 sheet film, and I couldn't see where the image was compromised. While it was under a controlled condition and I admit, I wouldn't use that lens in any situation where there was flare, the point is that a lens can look pretty bad and still perform.
Also, many years ago, the best lenses were the ones that had little air bubbles in them. I have an old Ansco TLR with several bubbles in the lens.

 

Hi Jim,
Did you get the lens with the fungus?

I have not experienced fungus in my lenses but I do know that I wouldn't touch a lens with it because of the damage it can do. I have had much experience with fungus in Florida and after hurricane Charley last summer.

The homes and condos that got water damage also had terrible mildew (fungus) damage and all walls had to be torn out and started over. The stuff just grows and grows and impossible to get rid of it when in the homes.

So I guess when I apply what I know about it in Florida it then makes me more careful than ever about fungus in the lenses.

THose are just my thoughts about fungus-- I wouldn't want it anywhere :frown:

For what it's worth,

 

Dry hot climate like we have here in St. George, Utah would definitely stop the fungus from growing but I am with Gaye, I don't want fungus anywhere around me.

 

I'd be scared to contaminate all my other lenses with a cheap infected lens.
I wouldn't want to throw away my 85 1.4 and 28 1.4, just to name a few...