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

Started Feb 22, 2018 | Questions thread
Steezus
Steezus Forum Member • Posts: 79
Re: Seeking advice: New lens: Nikon 105 f2 DC or Fuji 90 f2

MisterHairy wrote:

sdbrock wrote:

Is this because the f-stop is a ratio?

Yes. It is the ratio of focal length / aperture diameter. It is a physical characteristic of the lens and is independent of camera/sensor/film.

The only thing that matters is how much light hits the sensor. This is why the Nikon 105 F2 is still an F2 on an aps c body.

If you were correct, everyone would be buying FF lenses exclusively for their aps c gear since your bad math magically turns the lens into a much faster lens than it is on FF.

 Steezus's gear list:Steezus's gear list
Fujifilm X-T2 Fujifilm X-S10 Fujifilm XF 14mm F2.8 R Samyang 12mm F2.0 NCS CS XF 90mm +2 more
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