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gyoung143
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Re: Manual Focus Nikon Glass



leighton w wrote:
RicHammond wrote:
leighton w wrote:
gbohannon wrote:
leighton w wrote:
Dean inspired me to use my 55/1.2 SC today and I thank him for that. It really is a nice lens.



Great 55/1.2 shots Leighton. Is that with the focal reducer adapter too?


Thanks George. Yea, it's the focal reducer, it lives on my camera now. Except the 50-135mm. I like that lens as a poor man's 70-200.


What is a focal reducer? PS: I'm trying to catchup on posts.


Simply put, it is a lens adapter (In my case Nikon F to Fuji X-mount) that has glass in it. It is designed to to reduce the focal length of any lens to reflect the lenses true focal length when shooting on a crop sensor camera. It also has the added benefit of increasing your f-stop. There is a mathematical formula you use to determine is lenses attributes.

Focal length of the lens x magnification of the adapter x crop factor of the camera = adapted focal length. For example, (50mm lens x 0.73 magnification) x 1.5 crop factor = 54.75mm length. For the f stop, the manufacture claims an increase of 1 stop. My understanding of this equation is simply f stop x magnification of the adapter. For example, 1.8f x 0.73 = 1.3f.

Leighton, I would be interested to hear which lenses you find it most effective on.
I have a Lens Turbo II Nikon to Fuji, but haven't used it much. And my short focal length MF primes are not Nikon.

Gerry



Aug 22, 2021 at 12:58 PM
gyoung143
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Re: Manual Focus Nikon Glass




leighton w wrote:
RicHammond wrote:
leighton w wrote:
gbohannon wrote:
leighton w wrote:
Dean inspired me to use my 55/1.2 SC today and I thank him for that. It really is a nice lens.



Great 55/1.2 shots Leighton. Is that with the focal reducer adapter too?


Thanks George. Yea, it's the focal reducer, it lives on my camera now. Except the 50-135mm. I like that lens as a poor man's 70-200.


What is a focal reducer? PS: I'm trying to catchup on posts.


Simply put, it is a lens adapter (In my case Nikon F to Fuji X-mount) that has glass in it. It is designed to to reduce the focal length of any lens to reflect the lenses true focal length when shooting on a crop sensor camera. It also has the added benefit of increasing your f-stop. There is a mathematical formula you use to determine is lenses attributes.

Focal length of the lens x magnification of the adapter x crop factor of the camera = adapted focal length. For example, (50mm lens x 0.73 magnification) x 1.5 crop factor = 54.75mm length. For the f stop, the manufacture claims an increase of 1 stop. My understanding of this equation is simply f stop x magnification of the adapter. For example, 1.8f x 0.73 = 1.3f.

Leighton, I would becinterested to hear which lenses you find it most effective on.
I have a Lens Turbo II Nikon to Fuji, but haven't used it much. And my short focal length MF primes are not Nikon.

Gerry



Aug 22, 2021 at 05:10 AM





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