Specifications:
Type: 25mm F1.8
Lens construction: 5 elements in 3 groups
Focal length: f=25mm
35mm format equivalent: 37.5mm
Angle of view: 57.4º
Max. aperture: F1.8
Min. aperture: F16
Number of blades: 12(rounded diaphragm opeing)
Focus range: Approx. 20cm – ∞
External dimensions: ø38.0mm x55mm
Weight (excluding caps and hoods): Approx. 195g
Filter size: ø43mm