this post was submitted on 25 Jun 2025
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Funny

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[–] [email protected] 1 points 1 day ago (2 children)

someone care to explain to me why f1.4 is supposed to be the lowest f number jet i can buy a fresnel lens with a calculated f of 0.4?

[–] [email protected] 17 points 1 day ago (1 children)

Simple, f1.4 isn't supposed to be the lowest

[–] [email protected] 3 points 1 day ago

Yeah, I have normal camera lenses lower than that. From memory, the F-stop number is like a ratio between the focal length and the effective diameter of the lens.