Canon EF 100-300mm f/4.5-5.6 USM Teardown
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Identification
Check next to the focus ring for the text "CANON ZOOM LENS EF 100-300mm 1:4.5-5.6".
Technical Specifications
General:
- Focal Range: 100-300 mm
- Maximum Aperture: f/4.5-5.6
- Minimum Aperture: f/40
- Closest Focusing Distance: 1.5 m (4.9 ft)
- Maximum Magnification: 0.2 x (at 300 mm)
Construction:
- Lens Groups: 10
- Lens Elements: 13
- No. of Diaphragm Blades: 8
- AF Actuator: USM
Physical:
- Lens Mount Type: Canon EF
- Filter Diameter: 58 mm
- Maximum Diameter x Length: 73 x 121.5 mm (2.9 x 4.8 in)
- Weight: 540 g (1.2 lbs)
Accessories:
- Lens Hood: ET-65III
- Soft Case: ES-C17 / LP1019
- Magnification - Extension Tube EF12 II: 0.26 - 0.04
- Magnification - Extension Tube EF25 II: 0.37 - 0.09
Source: Canon Camera Museum Webpage & Canon Specifications Page
