COSINA voigtlander 40mm f2 IIS aspherical Ai-S Silver

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・ The lens configuration adopts a deformed double gaus type.In addition, the adoption of double -sided aspherical lens and ultra -high refractive index glass has achieved sharp sha rpness and smooth blurred taste even in the aperture.- Focal Distance 40mm caliber ratio 1 to 2 minimum aperture F22 lens configuration 6 5 groups angle of view 57 ° Number of squeezed feathers 9 sheets The shortest shooting distance 0.25m Maximum diameter x total length φ66.3 x 37.5mm Filter size φ52mm Weight 260g mount AI-S (built-in CPU) Lens food LH-40IIS (sold separately) Show more