Fujifilm announces world’s first f/1 lens with autofocus
At its Photokina 2018 presentation, Fujifilm took a moment to tease an extreme addition to its X-Mount series of lenses: the XF33mm F1 R. As its name suggests, this is a 33mm-equivalent prime lens with a maximum aperture of f/1 and autofocus capabilities, which makes it a first of its kind.
from https://www.theverge.com/2018/9/25/17900324/fujifilm-f1-autofocus-lens-mirrorless-photokina-2018
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