A long time ago I was told that the test for this was to look through the
lens at a point close to (but not at) the sun. Any separation in a glued
group should show up as a white cloud.
As I have never found a lens with this fault, I don't know if it works, but
I always check any lens I buy in this way.
Mike Bloor
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Seratel Ltd.
Computer Systems for
Electronics Manufacturers
Mulrany, Westport,
Co. Mayo, Ireland.
www.seratel.ie
Telephone: + 353 (0) 98 36244
Fax: + 353 (0) 98 36024
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