Canon EF 100-300mm f/4.5-5.6 USM Teardown
Tools
These are some common tools used to work on this device. You might not need every tool for every procedure.
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