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The monster Nikon Z 58mm f/0.95 S Noct could have been even BIGGER

The monster Nikon Z 58mm f/0.95 S Noct could have been even BIGGER
(Image credit: Digital Camera World)

The Nikkor Z 58mm f/0.95 S Noct is one of the biggest, most behemoth lenses available for Nikon's full-frame mirrorless cameras. According to Nikon, though, it could have been even bigger – with an increase in size "far beyond imagination".

Given that the Nikkor Z 58mm f/0.95 S Noct (opens in new tab), at 153mm and 4 lb 6.6 oz / 2,000g, is already the most monstrous lens on the Nikon Z lens roadmap (opens in new tab), how exactly could it be any beefier? The answer is simple: autofocus.

The Noct is, famously, a manual focus lens. And while it is certainly a challenge to nail precise focus – especially when shooting with the razor-thin depth of field at an f/0.95 aperture – the alternative was adding an autofocus mechanism that may have been unfeasibly big, unfeasibly slow and unfeasibly expensive.

• Read more: The 7 fastest lenses in 2020 (opens in new tab)

"Of course we have also studied AF, and driving the focus lens itself can be done," said Makoto Fujiwara, a designer for Nikon's Optical Engineering Division, in an interview with Chinese website Xitek (opens in new tab) (spotted by Mirrorless Rumors (opens in new tab)). 

"But the action is quite slow, not as fast as manual operation. At the same time, the increase in size is far beyond imagination. It cannot be driven by the existing ultrasonic motor, and a larger actuator must be arranged outside the lens.

"Therefore, if you really want to achieve AF in the f/0.95 lens, this optical type will not work. You need to reduce the focus lens and use the internal focusing method. But using this method will result in a longer overall length, which means that peripheral components will also increase, and the lens will still be larger and heavier than it is now. Even if such a lens is made, even if the product is very special, it may not be established as a product, so we gave up AF."

So, does that mean an f/0.95 lens like the Noct can never be made with autofocus ? After all, the (admittedly much smaller) Fujfilm XF 50mm f/1.0 (opens in new tab) AF lens is set to be released later this year. 

"We want to entrust future generations with the failure to do things this time as future dreams," said Fujiwara. Maybe for the Z mount successor, then… 

Read more: 

Best Nikon Z lenses (opens in new tab): best lens for Z6, Z7 and Z50 mirrorless cameras
Nikon Z6 review (opens in new tab)
Nikon Z7 review (opens in new tab)
Nikon Z50 review (opens in new tab)

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The editor of Digital Camera World, James has 21 years experience as a magazine and web journalist and started working in the photographic industry in 2014 (as an assistant to Damian McGillicuddy, who succeeded David Bailey as Principal Photographer for Olympus). In this time he shot for clients as diverse as Aston Martin Racing, Elinchrom and L'Oréal, in addition to shooting campaigns and product testing for Olympus, and providing training for professionals. This has led him to being a go-to expert for camera and lens reviews, photographic and lighting tutorials, as well as industry analysis, news and rumors for publications such as Digital Camera Magazine (opens in new tab)PhotoPlus: The Canon Magazine (opens in new tab)N-Photo: The Nikon Magazine (opens in new tab)Digital Photographer (opens in new tab) and Professional Imagemaker, as well as hosting workshops and demonstrations at The Photography Show (opens in new tab). An Olympus and Canon shooter, he has a wealth of knowledge on cameras of all makes – and a fondness for vintage lenses and instant cameras.