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06-21-2016, 04:44 PM   #1
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What is this haze?

I noticed this hazy ring inside my dal 18-55 kit, which I almost never use. It goes all around but I couldn't get it to show entirely. Seems to be somewhere towards the front, but definitely not on the outside element. I didn't try taking pictures after noticing this. I bought the lens used but I don't remember any major image quality issues before. Any ideas what this could be? Thanks.

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06-21-2016, 05:24 PM   #2
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the ramifications suggest fungus too
06-21-2016, 05:30 PM   #3
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Fungus !
06-21-2016, 06:23 PM   #4
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Thanks for the replies. After a quick test which proved nothing has changed, I think it's always been there and I never noticed it before. It's barely visible with the naked eye. It only affect iq noticeably when against a strong light. Good thing I wasn't storing it next to my other lenses I guess.

06-21-2016, 07:45 PM   #5
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QuoteOriginally posted by aaacb Quote
Thanks for the replies. After a quick test which proved nothing has changed, I think it's always been there and I never noticed it before. It's barely visible with the naked eye. It only affect iq noticeably when against a strong light. Good thing I wasn't storing it next to my other lenses I guess.
Most likely all of your lenses (and mine) contain fungus spores. The trick is low light with high humidity allows them to grow.
I don't think your lens is contagious. But I'm no expert.
06-21-2016, 10:53 PM - 1 Like   #6
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Despite the appearance it might not be fungus. I had a similar haze on both my copies of the DA L 18-55. When I opened them up for cleaning I found it was actually excess lubricant that had migrated -- more specifically it seemed to have condensed on the front surface of the second group.

If it is the same issue it's easy to clean. Once you pop the trim ring off (held on by a few strips of double-sided tape) you can access the screws that hold in the front group. With this off you can get at the affected element but note that it's in the assembly that moves when zooming. IPA on a cotton bud followed by a few passes with lens tissue cleaned it up nicely.
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