Patents related to photo lenses

Started 6 months ago | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 758
Re: Leitz 50mm f1.4 Summilux-R

bclaff wrote:

Dibyendu Majumdar wrote:

I think this is the original version:


Not sure what you mean by "original version" but it doesn't match this:

Yes this is the version introduced in the 1990s. It's called the E60 version due to the diameter of its filter. The original is the previous version which was made until mid 1990s.

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