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Sigma Lens APO 120-400mm F4.5-5.6 DG HSM Specification: Lens Construction: 21 Elements in 15 Groups Angle of View: 20.4 - 6.2 degrees Number of Diaphragm Blades: 9 Blades Minimum Aperture: F22 Minimum Focusing Distance : 150cm / 59.1 in. Maximum Magnification : 1:4.2 Dimensions: Diameter 92.5mm X Length 203.5mm (3.6 in. X 8 in.) Corresponding AF Mounts : Pentax |
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