Canon Rumors General

New Article – Lens Genealogy

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Lens Genealogy
Ever wondered how a lens is designed, where it comes from or why things are done the way they are? This new article from’s Roger Cicala may answer some of those questions.

It’s a great article and well worth the read, just have some time for it.

I knew that today’s lenses are all designed using computer programs, but I was surprised to find new lenses aren’t designed from scratch. Designers start with an existing lens design and modify it. Of course, a lens designer doesn’t say “this lens really sucks, let’s use it as our starting point”. They start with a good design and try to improve it.

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