Mike wrote:
>
> 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.
>
I have a lens with this problem (not a Zuiko by the way), and it shows up as
dark, almost concentric rings (interference fringes) when looking through
the lens.
Wayne Harridge
Ivanhoe, Victoria, Australia
http://www.geocities.com/wayneharridge/
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|