Aperture ratio: 1:2.8. Lens construction: 7 elements in 7 groups. Angle of view:27.4. Number of aperture blades: 10 (circular aperture at F2.8, F4, and F22 maximum apertures).
Minimum focus distance: 0.9 m. Maximum diameter × total length:? Lens hood:included (can be attached in reverse).International Buyers - Please Note. Than you for your understanding.