• L-series ultra-wide zoom lens
• Highly dust and water resistant design
• 11mm starting focal length
• Use of on Super UD and one UD lens
• Four aspheric lens elements
• Subwavelength Coating (SWC)
• Air Sphere Coating (ASC)
• Circular aperture (9 blades)
• Rear focus system and ring USM
• Fluorine coating on front and rear elements
• Full-time manual focus
• Minimum focusing distance: 11 in. (0.28 m) (at 24mm)

-Zoom Super Wide Angle
-For Canon EOS DSLRs
-Di-II design; specifically made for APS-C senors format digital SLRs

• Ultra wide-angle zoom lens
• Compact and lightweight
• F=7mm to 14mm (35mm camera equivalent 14mm to 28mm)
• Construction: 16 elements in 12groups (2 Aspherical lenses, 4 ED lenses)
• 114° of diagonal angle of view at wide-end
• F4.0 brightness over the entire zoom range
• Contrast AF system support
• Circular aperture diaphragm
• Micro Four Thirds mount
• Multi-coated lens elements
• Durable metal mount

• ZEISS T* (T-star) coating
• Circular Aperture
• 5 Aspherical lens elements
• 3 ED (Extra-low Dispersion) glass
• Constant F4 max aperture
• Lens-based Optical SteadyShot® IS
• Dust and moisture resistant design
• Sony E-mount (35mm full frame)
• 72mm Filter diameter

-Wide-angle zoom for Canon EOS SLRs
-Non-rotating internal focus with aspherical elements
-"Di" design; made with digital SLRs specifically in mind

• Fast aperture 
• High-performance, ultra-wide-angle zoom 
• Optimized for FX- and DX-format sensors featuring Nikon’s exclusive ED Glass and Nano Crystal Coat.