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Zenzanon 300m F4.5
Lens construction: 6 elements in 5 groups
Angle of view: 14 degrees 50 minutes
Minimum aperture: f/32
Minimum focus: 4m (13.12 ft)
Filter size: 82 mm screw type
Weight: 1.8 kg
Nikkor 400mm F4.5
Lens construction: 4 elements in 4 groups
Angle of view: 11 degrees
Minimum aperture: f/22
Closest distance: 5 m (16.4 ft)
Filter Size: 122mm screw type
Weight: 3.3 kg
Nikkor 600mm f5.6
Lens construction: 5 elements in 4 groups
Angle of view: 7 degrees 30 minutes
Minimum aperture: f/22
Closest distance: 11 m (36 ft)
Filter Size: 122mm screw type
Weight: 3.8 kg