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Archive 2012Bubbles or Fungus?
p.1 #1Bubbles or Fungus?
Hi all. I bought this Soligor 135/2 at a camera show last year. When looking through the glass, you really don't see the artifacts. But a few weeks ago I was simply holding the lens up in the air just looking through it, I noticed these little specs. My lens has always been stored in the house with temps between 76-78 and I have never gotten the lens wet. They really are hard to see and you need to have just the right amount of light shining through to see them.
Jan 05, 2012 at 03:34 PM
p.1 #2Bubbles or Fungus?
That isn't fungus, fungus looks like spider web. I don't know what this is. Small craters from tiny meteorites? 
Jan 05, 2012 at 03:41 PM
p.1 #3Bubbles or Fungus?
No fungus.
I guess it could be the drying marks of some (cleaning) liquid.
I guess it could be the drying marks of some (cleaning) liquid.
Jan 05, 2012 at 03:50 PM
p.1 #5Bubbles or Fungus?
Bubbles in coating look very similar (I think it is exactly that). Shouldnt have effect on IQ.
Jan 05, 2012 at 04:59 PM
p.1 #6Bubbles or Fungus?
Of course that will affect IQ... How much and under what circumstance is the only question.
But I've never seen the likes of this before... I've seen bubbles is several kinds of doublet cement and also coating separation but neither looked like this. Hmm, it's new to me whatever it is...
Also not all fungi looks like spiderwebs - some I've seen doesn't... although I've never seen any (on a lens) that looked like this either so... yeah... it's probably not fungus.
I'm gonna go with Ed and guess oil. Although.... the crater idea is intriguing!
But I've never seen the likes of this before... I've seen bubbles is several kinds of doublet cement and also coating separation but neither looked like this. Hmm, it's new to me whatever it is...
Also not all fungi looks like spiderwebs - some I've seen doesn't... although I've never seen any (on a lens) that looked like this either so... yeah... it's probably not fungus.
I'm gonna go with Ed and guess oil. Although.... the crater idea is intriguing!
Jan 05, 2012 at 05:11 PM
p.1 #7Bubbles or Fungus?
Hmmm...
Dried-up cleaning fluid that got behind the element(s) from way-over-the-top liquid application?
Edd
Dried-up cleaning fluid that got behind the element(s) from way-over-the-top liquid application?
Edd
Jan 05, 2012 at 05:39 PM
p.1 #8Bubbles or Fungus?
Air bubbles in a cemented doublet is my guess.
Only one way to find out for sure... open it up.
a flashlight(torch) could help you figure it out.
Only one way to find out for sure... open it up.
a flashlight(torch) could help you figure it out.
Jan 05, 2012 at 09:20 PM
p.1 #9Bubbles or Fungus?
Alright thanks guys.
I can't wipe it from the rear or front glass, and it doesn't seem to run as if it was oil. I've never used any cleaning liquids on it.
I can't wipe it from the rear or front glass, and it doesn't seem to run as if it was oil. I've never used any cleaning liquids on it.
Jan 05, 2012 at 11:40 PM
p.1 #10Bubbles or Fungus?
When going inside for a clean-up determine as best you can which surface it's actually on. If it's just behind the front element I'd go for the cleaning. Get a pair of fine weave cotton gloves like those hotel fussbudgets wear to inspect surfaces, remove the element, clean and replace. Have a grease pencil handy too and if the lens element(s) seem to confuse as to which way they go (back) in mark the outside surface with a small X and then clean that off each surface as you put them back. But by looking at your image there I think it's only the first element right? So should be easy?
Jan 07, 2012 at 12:18 PM