Large -diameter super wide -angle single focus lens that demonstrates excellent depiction power with high resolution regardless of shooting distance- model Nikon Z mount Focal Distance 20mm Maximum caliber ratio 1 -vs 1.8 lens configuration 14 groups (3 ED lenses, 3 aspherical lenses, with nanoclistal coat) angle of view 94 degrees (imaging range FX)/70 degrees (imaging range DX) Focus multi -focus method, IF (Internal Focus) method The shortest shooting distance 0.2m from the imaging surface Maximum shooting magnification 0.19 times Number of squeezed feathers 9 pieces (circular aperture) Aperture method Automatic aperture by electromagnetic aperture Maximum aperture f/1.8 minimum aperture f/16 Attachment size (filter size) 77mm (p = 0.75mm) Dimensions 84.5mm (maximum diameter) x 108.5mm (from lens mount reference surface to lens tip) Mass about 505g Accessories Lens cap 77mm LC-77B (Spring type)/back tsuto LF-N1/Bayonet hood HB-95/lens case CL-C1