Sigma

Key features:

• Focal length: 24-70mm
• Aperture range: f/2.2-22
• Canon EF mount lens
• 35mm Film/ Full-Frame Digital sensor format
• Optical Stabilization (OS)
• 9 rounded blade diaphragm
• HSM with faster, yet smoother focusing
• Creates beautiful Bokeh 
• Splashproof and dustproof design
• USB Dock compatible

Key features:

• Focal length: 85mm
• Aperture range: f/1.4-16
• Canon EF mount lens
• 35mm Film / Full-Frame digital sensor format
• Rounded 9-blade diaphragm
• Hyper-Sonic Motor focusing (HSM)
• Two Low Dispersion elements
• Stellar optical performance
• Super Multi-Layer coating

Key features:

• Focal length: 18-35mm
• Aperture: f/1.8 - f/16
• Canon EF mount lens
• Canon APS-C format
• 9 blade rounded diaphragm
• Special low Dispersion glass
• Hyper sonic motor
• Internal focusing and zoom design
• USB dock compatible

Key features:

• Focal Length: 14 - 24mm
• Aperture range f/2.8 - f/22
• Canon EF Mount Lens
• 35mm Film / Full-Frame Digital Sensor Format
• Hyper-Sonic Motor Focusing (HSM), manual override
• Virtually zero distortion at infinity focus
• 3 FLD, 3 SLD, and 3 Aspherical Elements
• Rounded 9-Blade Diaphragm
• Dust/splash proof Weather Sealing
• Sigma USB Dock compatible

Key features:

• Focal length: 35mm
• Aperture range: f/1.4-16
• Canon EF mount lens
• 35mm Film / Full-Frame / APS-C format
• Hyper-Sonic Motor Focusing (HSM)
• Rounded 9-blade diaphragm
• Two aspherical elements
• Super multi-layer coating
• Sigma USB dock compatible

Key features:

• Focal Length: 50 - 100mm
• Aperture Range: f/1.8-16
• Canon EF- Mount Lens
• APS-C Format 
• Hyper Sonic Motor Focusing (HSM)
• Internal zoom and focus
• 3 FLD glass and 1 SLD glass element
• Rounded 9-Blade Polycarbonate Diaphragm
• Tripod collar- fixed, rotating
• Super multi-layer coating

Key features:

• Focal length: 14mm
• Aperture range: f/1.8 - f/16
• Canon EF mount lens
• 35mm film / full-frame digital sensor format
• Hyper-Sonic Motor Focusing (HSM)
• Four aspherical elements
• Rounded 9-blade diaphragm
• Brass bayonet mount
• Super multi-layerc coating

Key features:

• Focal length: 20mm
• Aperture range: f/1.4-16
• Canon EF-mount lens
• 35mm Film /Full-Frame Digital Sensor/ Canon (APS-C) format
• Hyper-Sonic Motor focusing (HSM)
• Two FLD elements and five SLD elements
• Two aspherical elements
• Rounded 9-blade diaphragm
• TSC material, Brass bayonet mount
• Sigma USB dock compatible

Key features:

• Focal length: 135mm
• Aperture range: f/1.8-16
• Canon EF-mount lens
• 35mm film / full-frame digital sensor format
• Hyper-Sonic Motor Focusing (HSM)
• Two FLD elements, two SLD elements
• Rounded 9-blade diaphragm
• Full frame lens with APS-C compatibility
• Sigma USB Dock compatible

Key features:

• Focal length: 500mm
• Aperture range: f/4 - f/32
• Canon EF lens mount
• 35mm film / full-frame digital sensor format
• Optical Stabilization (OS)
• High performance telephoto lens
• Enhanced dust and splash-proof construction
• AF (Auto-Focus) function switch
• Magnesium alloy lens barrel
• Tripod socket with 90 degree click stops

Key features:

• Focal length: 70-200mm
• Aperture range: f/2.8-22
• Canon EF-mount lens
• Full frame and APS-C size sensor
• 9 FLD and 1 SLD glass elements
• HSM (Hyper Sonic Motor) for high-Speed AF
• 11-blade rounded diaphragm
• Designed to minimize flare and ghosting
• Magnesium alloy lens barrel
• Water- and oil-repellent coating

Key features:

• Focal length: 120 - 300mm
• Aperture range: f/2.8-22
• Canon EF mount lens
• 35mm film / full-frame digital sensor / DSLR (APS-C sensor)
• Optical Stabilizer (OS)
• Hyper-sonic motor focusing (HSM)
• FLD and SLD lens elements
• Super multi-layer coating
• Dust- and splash-proof construction
• Compatible with Sigma USB dock

Key features:

• Focal length: 105mm
• Aperture range: f/2.8-22
• Canon EF mount lens
• 35mm Film / Full-Frame Digital Sensor / DSLR (APS-C) format
• Optical Stabilization (OS)
• Hyper-Sonic Motor Focusing (HSM)
• 1:1 magnification
• EX finished to denote superior quality
• 9 blade diaphragm

Key features:

• Use with Sigma Optimization Pro Software
• Connects your lens to your computer
• Adjust focus settings and update firmware
• Compatible with Art, Contemporary, Sport lines
• Four categories of customization for fixed focal length
• Three different AF speed modes
• Constrain focus distance
• Three different Optical Stabilizer modes
• Available for Mac and PC computers

Key features:

• Focal length: 24-105mm
• Aperture range: f/4-22
• Canon EF-mount lens
• 35mm Film / Full-Frame digital sensor
• Optical Stabilization (OS)
• Hyper-Sonic Motor focusing (HSM)
• 3 Aspherical, 2 SLD, and 2 FLD elements
• Thermally Stable Composite
• Sigma USB Dock compatible

Key features:

• Focal length of 200 - 500mm
• Aperture range of f/2.8-22
• Canon EF lens mount
• Zoom super telephoto
• Built-in LCD panel for focal info
• Minimum focus distance: 6.56-feet
• 1:8 maximum reproduction ratio
• 9 diaphragm blades