At 17mm, central sharpness is outstanding from f/2.8 through to f/8, excellent at f/11, very good at f/16 and good at f/22. The edges are excellent at f/2.8, outstanding at f/4, excellent at f/5.6 ...

(From Nikon lens literature) Ready to go everywhere. The 1 NIKKOR AW 10mm f/2.8 has all of the features of the original 10mm f/2.8 lens, plus waterproof and shockproof construction, making it ...

(From Konica Minolta lens literature) This lens allows you to use a maximum aperture of f/2.8 at any focal length from 28 to 70mm. It also has a nine-bladed circular aperture that produces rounded ...