This particular lens has auto focus to give you the best setting for each picture. The lens has a maximum ƒ/1.4 aperture and a minimum ƒ/16.
From London Camera Exchange
Fujifilm XF 16mm F1.4 R WR
TechintheBasket
Fujifilm Fujinon XF 16 mm F1.4 R WR Lens
This product is also available at 6 unverified stores.