"Leica DG VARIO-SUMMILUX" lens The latest optical design is optimally arranged, and you can enjoy the excellent description performance as large as a large -diameter single focus lens, and a high -quality bokeh taste throughout the zoom.- lens configuration 12 groups 17 pieces (aspherical lens → 3 pieces) Lens name Leica DG VARIO-SUMMILUX 10-25mm/F1.7 ASPH. mount Micro Four Thirds Open squeezing F1.7 Aperture ring ○ aperture format 9 pieces blading circular rainy visha squeezing minimum aperture F16 The shortest shooting distance 0.28m Focal Distance 10mm (50mm film camera converted 20mm) Shooting range 0.28m ~ ∞ (from the imaging side) Filter diameter 77mm Maximum shooting magnification 0.14 times (35mm format 0.28 times) angle of view 94 ° to 47 ° External dimensions Maximum diameter of 87.6mm, total length 128mm (from the tip to the mount reference surface) Mass about 690g (including front and rear caps and food)