Lens Specifications Format 35mm full frame Focal length 16mm - 35mm Lens groups 12 Lens Elements 15 Maximum aperture f/2.8 Minimum aperture f/22 Number of aperture blade 11 Circular aperture Yes Minimum focus distance 0.22m Maximum magnification ratio 0.32x Filter diameter (mm) 82 Fluorine coating Yes Dust and moisture resistant Yes Dimensions (mm) 87.8 x 111.5 Weight 547 grams
