6 replies to this topic

[kamrankhan54]

Hi all,

 

I have no idea what this is but there's something there inside my lens. Check the edges of the pics attached, something has happened, no idea what. The lens still takes amazing pictures and I have no issues with images. No spots or anything. 

 

Any ideas? 

 

 

 

[TBonz]

No Image attached...

[Merco_61]

It looks like two of the elements that are cemented together are starting to separate. Keep using it as long as it doesn't start impacting the captured photos. There used to be a few repair places that undertook re-cementing old lenses in the 90-s, but I haven't heard of any for years.

[Nikon Shooter]

It looks like two of the elements are starting to separate…

I don't come to the same conclusion, Peter.

To me, it looks like just plain, ugly fungous — from the
observed cloud formation development.

I loved that lens (stolen in France) in the days, the perfect
lens when one wants to keep distance from given dangers!

[Bengan]

I have to agree with Peter. It looks like separation to me as well.

[fallout666]

i see both ways mold and what peter said. since use to see white mold from trust plant on wood. 

[Brian]

Mold tends to have a spider-web look to it.

 

This looks like separation of two elements. Usually it will not cause an issue, use a hood. If it gets worse, a do-it-yourself fix is to use index matching oil, like that found for microscope immersion lenses, to reduce the reflections and "Newton's Rings". The surface tension between the elements is enough to hold them together with the oil. I did this on a Canon 135/3.5 Leica mount lens some 10 years ago, still works fine.