Used it many times but don't know what's that thing inside the lens OFFER ME A PRICE Brand: Canon Focal length description: 75-300 millimeters Lens type: Telephoto Compatible mountings: Canon EOS Camera lens description: 75-300 mm Maximum focal length: 300 Millimetres Focal Length & Maximum Aperture: 75-300mm 1:4-5.6 Lens Construction: 13 elements in 9 groups Diagonal Angle of View : 32° 11' - 8° 15' Focus Adjustment: Front group rotating extension system with Micromotor Closest Focusing Distance:1.5m/ 4.9 ft.
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