When Nikon revealed its Z-Series full-frame mirrorless cameras, it also announced the development of the company’s fastest lens—the manual-focus Nikkor Z 58mm f/0.95 S Noct. We were told that this lens represents the ultimate of what the new Z-mount makes possible because of its large 55mm inner diameter and short 16mm flange back distance—the distance from the mount to the sensor.
Now, in an interview with a French photography blog, the Director of Marketing and Communication for Nikon France, Nicolas Gillet, has revealed the optical boffins have calculated that the Z-mount is actually capable—in theory—of supporting an autofocus lens with an aperture as large as f/0.65. (The Nikon F-mount, by comparison, is physically limited to lenses with apertures no larger than f/1.4.)
If you’re a little mystified by all the numbers and jargon, check out this illuminating video of a Nikon optical engineer explaining why the Z-mount was designed that way.
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