F0.95 vs. f.1.0

Started 1 month ago | Discussions thread
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NO x Junior Member • Posts: 42
F0.95 vs. f.1.0

Saw that Zenit 0.95 on the homepage and got to thinking: What is the formula for knowing how much more light a f.0.95 is than a f.10 lens?

I know it's more than 5%, but what's the exact number?

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