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Seeking advice: New lens: Nikon 105 f2 DC or Fuji 90 f2

Started Feb 22, 2018 | Questions thread
MisterHairy Senior Member • Posts: 2,561
Re: Seeking advice: New lens: Nikon 105 f2 DC or Fuji 90 f2

Steezus wrote:

You are too funny with your ironic comments about not understanding.

Trust me, you are the one misunderstanding what you are reading.

Oh dear. Maybe you should stop now.

Just in case you do feel like bucking the trend and educating yourself, here's a nice simple reference for you:

https://en.wikipedia.org/wiki/Aperture

Please pay particular attention to the section a bit more than half way down the page titled "Aperture Area" where it states:

(quoted from Wikipedia)

The amount of light captured by a lens is proportional to the area of the aperture, equal to:

(end of quoted section from Wikipedia)

Simples.

Now, of course you might say that Wikipedia is not 100% reliable on all topics, and of course, it isn't, but it is right here. Aperture area governs how much light can pass through a lens. It's obvious; a bigger hole lets more light pass through.

-- hide signature --

Really beautiful photograph!

[yes, yes, I do realise that I am being slightly naughty here by conveniently ignoring the fact that the cone of light entering a longer lens subtends a narrower angle than that entering a wider (shorter) one]

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