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Fujifilm 50mm f/1 will be world's fastest AF lens... and will go on sale this year!

(Image credit: Digital Camera World)

Fujifilm will be launching its incredible 50mm f/1.0 lens for its X range of cameras THIS year. But at the X Summit last night, the mirrorless manufacturer also made it clear that this won't be the only new addition to arrive for the XF mount roadmap this year... there will be three further lenses that will arrive in 2020. 

There were no details as to what the extra lenses will be, and when we will get more information. However, we now now that Fujifilm will have another major press conference later this month on 26 February... where the new Fujifilm XT-4 flagship will be revealed. More lenses could well be announced here.

The Fujinon XF50mm F1.0 WR lens was originally announced in September last year as a concept lens... and one that replaced the original intention to produce a 35mm f/1.0 lens for the system. The change in tack was put down to the fact that the 35mm version would be too big. But now the concept is set to be a reality with the news that this innovative prime will be available to buy by then end of the year.

Optical construction of the Fujifilm XF 50mm f/1.0 (Image credit: Digital Camera World)

The 50mm f/1.0 will not just one of the fastest lenses ever, but will be THE fastest autofocus lens in production. It will also share the record as the fastest autofocus lens ever with the legendary Canon EF 50mm f/1.0 L USM lens which was produced for film SLRs during the 1990s.

At the conference, journalists were shown an early working sample of the Fujinon lens - showing it working with contrast detection autofocus (the final version will also work with phase detection AF). 

We also got to spend a few moments with the new lens during a private Q&A session with Fujifilm executives.

Fujinon XF50mm F1.0 WR

Mounted on a Fujifilm X-T3, the Fujinon XF50mm F1.0 WR is big, but certainly not unmanageable. (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF50mm F1.0 WR

The Fujinon XF50mm F1.0 WR has an aperture ring that goes three stops wider than most we're used to! (Image credit: Rod Lawton/Digital Camera World)

The optical construction of the lens was also revealed for the first time, which uses a novel system to achieve the combination of super-fast light-gathering characteristics as well as AF performance. The elements are essentially split into two groups. The front elements are the big, light gathering glass... and at the back smaller, lighter elements are used to adjust the focus.

There are eight elements in the front group - of which two will be ED lenses. And there are a further five elements in the rear focus group. The other specification to be revealed is that it will have a 77mm front filter ring.

Early working prototype of the XF 50mm f/1.0 aimed at journalists at the X Summit in London (Image credit: Digital Camera World)

With an effective focal length of 75mm, the super-fast prime lens is bound to become a favorite amongst portrait photographers who want maximum bokeh. And unlike with rival lenses, the difficulties of getting the image sharp in the right area with a lens with such limited depth of field when used wide open can be left in the hands of the autofocus system.

Pricing for the XF 50mm f/1.0 has yet to be announced. 

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