EF 58mm F1.4 patent 3 years old..

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Holscen Regular Member • Posts: 453
EF 58mm F1.4 patent 3 years old..

....how long does it take to produce a lens after a patent is listed?

Do they patent lens designs with no intention of making them - Why? or perhaps they've just abandoned some EF projects to concentrate resources on RF lenses.

Are there lenses have you read patents about that you are still waiting for?

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