Patents related to photo lenses

Started 6 months ago | Discussions thread
bclaff Forum Pro • Posts: 10,470
Re: Leica Summicron Mandler 1976

ipopov wrote:

Maybe the datasheet is for the different version of the lens and they had slightly different focal lensgth? I believe there were 2 versions of Summicron-R 50/2. On the other hand, optical diagram is very similar.

It's never clear that a patent example exactly corresponds to a production lens.

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

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