Archived posting to the Leica Users Group, 2000/06/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]According to an old Leica Manual (quoting Leitz sources), lens bubbles are normal in some glass formulae, not in others. They neither or add nor detract from the imaging quality. A lens with bubbles is no better or worse than one without. Bubbles are not the mark of a better lens, Leitz is quoted as saying, nor are they a contaminant. They just are. As for dust n' stuff...think of how much dust is floating around in front of you right now. Unless you're in a dust storm or a grain elevator, is your vision impaired because of it? I don't think a few particles between lens elements will hurt anything. Of course, all this is very easy for me to say. For many years now I have studiously avoided inspecting my lenses by shining bright lights through them for any reason whatsoever. This practice of avoidance works better than Bayer aspirin in preventing first heart attacks. Craig Boston