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Fujifilm launches world’s fastest autofocus lens for mirrorless cameras

Turn that aperture ring all the way down to f/1.0

Fujifilm has announced what it’s calling the “world’s first autofocus lens with a maximum aperture of f/1.0” for its X-series mirrorless cameras. In other words, it’s the fastest autofocus-equipped lens we’ve seen for producing dreamy bokeh on cameras like the Fujifilm X-T4.

As the name suggests, the XF50mm F1.0 R WR has an aperture of f/1.0. If you’re not familiar with aperture, this is the size of the hole through which light enters your camera.

The lower the f-number, the larger the lens’ aperture. A wide aperture means more light can pass through, allowing faster shutter speeds to be used – which is why you’ll hear words like ‘fast’ or ‘bright’ being used to describe lenses like the XF50mm F1.0 R WR.

We did recently see a Nikon lens with an even faster f/0.95 aperture called the Nikon Nikkor Z 58mm f/0.95 Noct. But what’s interesting about the Fujifilm XF50mm F1.0 R WR is that, unlike that Nikon lens, it offers autofocus rather than manual focus. And because it’s designed for Fujifilm’s APS-C cameras (which have smaller sensors than full-frame models), the lens also more affordable and compact than Nikon’s hefty beast.

Not that the weather-sealed XF50mm F1.0 R WR is small – it weighs 845g and measures 103.5mm x 87mm, making one of the weightiest primes Fujifilm’s collection of 35 X-series lenses. But as you can see in the image below, it’s a decent match for a relatively small mirrorless camera like the Fujifilm X-T4.

That 50mm focal length is equivalent to 76mm on a full-frame camera (with…

Mark Wilson

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