Focal length: 28 mm, aperture range: f/2 – f/22, focusing range: 0.24 m –8, number of elements/groups: 10/8, angular field, diag./horiz./vert. : 74°/65°/45°, coverage at close range: 18 x 12 cm, filter thread m 58 x 0.75, dimensions (with caps) : ø 64-72 mm, length 93-96 mm. Weight: 500g - 580g