Patents related to photo lenses

Started 6 months ago | Discussions thread
bclaff Forum Pro • Posts: 10,474
Re: Leica Summicron Mandler 1976
1

Dibyendu Majumdar wrote:

https://patents.google.com/patent/US4123144A/en

Officially the Leica Summicron R 50mm f/2

Like many "50mm" lenses it's actually 52mm

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

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