Someone educate me here, because I am puzzled.

My basic understanding of lens aperture is that the F stop directly correlates with the amount of light that goes through the lens. I do understand that the f stop is actually a fraction, 1 over the square root of <something>, which means that f1.4 [1.4 ~ srq(2)] gives twice the light of f2 [2 = sqr(4)], which gives twice the light of f2.8 [2.8 ~ srq(8)], and so on.

Now, take the Noct 0.95.

Shouldn't the aperture of 0.95 mean that effectively, there is more light coming out of the back of the lens than actually entered?

My misunderstanding of math / physics or a marketing ploy?

Someone enlighten me.