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Focal Length & Maximum Aperture: 300mm 1:2.8 Lens Construction: 16 elements in 12 groups (Including drop-in rear filter, Fluorite: G2 and G4, UD Lens: None) Diagonal Angle of Viewc8.15 degreeFocus Adjustment: Inner focusing system, with focusing cam Closest Focusing Distance: 2.0m / 6.6ft. Filter Size: 52mm Drop-in Max. Diameter x Length: 128 x 248 mmWeight: 2350 g
