Patents related to photo lenses

Started 6 months ago | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 758
Re: Sigma 40mm f1.4 ART

bclaff wrote:

Dibyendu Majumdar wrote:

Thanks. Related. But not a match by my standards. Example 1 is the closest:

Thanks Bill. I don't see the lens in your Optical bench yet?


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