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Zodiak 30mm fisheye -air bubbles in the glass


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Air bubbles are a problem for glass makers. This thread refers to bubbles in a large format lens:



I couldn't easily find a reference easily to the fact that Leica users once regarded air bubbles as a sign of genuine Leica quality, but I will keep digging and prove it if I get flamed.


In the meantime, here is a link to Robert Monaghan's page on lens problems, which gives a very comprehensive desciption of all the possibilities:



Regards, Ross

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