Patents related to photo lenses

Started 6 months ago | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 758
Re: Leitz 800mm f6.3

bclaff wrote:

Dibyendu Majumdar wrote:

I think this one is for the Leica 800mm f6.3 which was one of the earliest 35mm lenses to feature ED like glass.

FWIW, the patent specifies f/5.9 but they certain could have reduced the element sizes slight for f/6.3

Play with it here . You can change 01 to 01U to see the unscaled version.

Nice - the link may be incorrect?

I am attaching some info that might help fine tune:

Alsop this link:

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