Lens quality control

Started Sep 24, 2013 | Discussions thread
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Contributing MemberPosts: 797
Re: Learning lens design
In reply to ProfHankD, Oct 1, 2013

Interesting question .

Matter of fact, SEL lenses have so far never been proven to suffer from sample variation issues , even though there probably are some .

However, no single proper test or proof of SEL lenses re- that matter, only lots of repitious claims based on nothing .

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