Why do older camera lenses have faster F-stops?

Started Apr 14, 2013 | Discussions thread
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vjk2
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Why do older camera lenses have faster F-stops?
Apr 14, 2013

I've gotten into vintage lenses lately, and it seems like with these older lenses, they're often much faster than the lenses I've gotten used to in the modern era.

I use Olympus and while I know that there is a 50mm f2.0 prime lens that costs $400, there are a number of less expensive vintage manual lenses I know of which will range from $50 for a f2 50mm to at most something like $150 for a f1.4

Could it be...what, autofocus, maybe the zoom design that makes modern lenses so dim?

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