Patents related to photo lenses

Started 6 months ago | Discussions thread
bclaff Forum Pro • Posts: 10,490
Re: Sigma 40mm f1.4 ART

Dibyendu Majumdar wrote:

https://patents.google.com/patent/JP2020012952A/en

https://www.sigmaphoto.com/lenses/standard-lenses/40mm-f1-4-dg-hsm-i-art

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

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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

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