Forum Übersicht - dyxum: Lens talk area : My 85/1.4 problem that most would not mind hav

Author: jamesdak
Subject: My 85/1.4 problem that most would not mind having
Posted: 09 January 2007 at 02:55

Not what I was looking for but found this after a search.


"Air bubbles are not, as is often thought, a defect in photographic lenses. In fact, while they are more apparent in the highest type of lens, they seldom appear in the cheaper grades. Bubbles are caused by the necessity of fusing the optical glass used in making lenses of high quality at a certain temperature, whether all bubbles have risen to the surface or not, in order to maintain certain optical properties. Such bubbles absolutely do not impair the definition or lessen the efficiency of a lens in the slightest degree."



That said, I've seen lens with a bubble or two over the years but nothing like what your picture shows. Try using a loupe to look at them closer to see if you can determine what you've actually got there. Until you totally rule out fungus make sure you keep that away from your other gear.




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