贴个规格:
Technical Specifications
Focal length: 25.7 mm
Aperture range: f/2.8 – f/22 (1/2 steps)
Focusing range: 0.17 m – infinity
Number of elements/groups: 10/8
Angular field, diag./horiz.: 80.2°/70°
Coverage at close range: 56 x 85 mm
Filter thread: M 58 x 0,75
Dimensions: 65 mm, length 66 mm
Weight 480 g