- Designed to extend a lenses focal length by a factor of 2x
- Features a built-in microcomputer
- Careful lens placement and coatings
- Minimize ghosting, flare and chromatic aberration
- Fluorine coating - Rugged, dustproof and water-resistant construction
- Compatible with fixed focal length L-series lenses 135mm and over, EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L

- Up to 4 Stops of Image Stabilization
- Superior Image Quality
- Ultra-Low Dispersion UD Glass
- Fluorite & Aspherical Elements
- Super Spectra Multi Coating
- Ultra Sonic Motor - USM
- Constant f/2.8 Maximum Aperture
- Filter Size - 77mm
- Eight Blade Circular Aperture
- Resistant to Dust and Moisture

- Telephoto Zoom Lens
- Image Stabilization Built-In
- Compatible with Extenders 1.4x II and 2x II

- EF mount; super telephoto lens 
- Fluorite and Ultra-low Dispersion-glass; internal focusing; full-time manual focus 
- 400mm focal length 
- f/5.6 maximum aperture 
- Micro UltraSonic Motor (USM)

• Canon EF 100–400mm f/4.5–5.6L IS II Lens 
• For Canon EF film and digital cameras
• Telephoto lens
• 21 elements in 16 groups
• USM AF motor
• Optical image stabilization
• Air Sphere and Fluorine Lens coatings
• 9-blade diaphragm
• Weather-sealed design
• Tripod collar 

- Features a built-in microcomputer
- Features careful lens placement and coatings
- Features a new new Fluorine coating
- Rugged, dustproof and water resistant construction
- Compatible with L-Series telephoto and telephoto zoom lenses