Sigma

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: 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: 50 - 100mm
• Aperture range: f/1.8-16
• Sigma SA 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: 18-35mm
• Aperture range: 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: 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: 18-35mm
• Aperture: f/1.8-16
• Nikon F mount lens
• Nikon DX format
• 9-blade rounded diaphragm
• Special low dispersion glass
• Hyper sonic motor ensures accurate autofocusing
• Internal focusing and zoom design
• USB dock compatible
• Super multi-layer lens coating

Key features:

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

Key features:

• Focal length: 18-35mm
• Aperture range: f/1.8-16
• Sigma SA mount lens
• Canon APS-C format
• 9-blade rounded diaphragm
• Special Low Dispersion glass
• Hyper Sonic Motor
• Internal focusing and zoom design
• Super Multi-Layer coating
• Sigma USB dock compatible

Key features:

• Focal Length: 300-600mm
• Aperture Range: f/4 to f/22
• For Sony E-Mount Lens 
• Full-Frame Format
• Angle of View: 8.2-4.1 degrees
• Optical Stabilization Algorithm OS2 
• 6.   Wide-Angle to Telephoto Zoom Macro Lens
• HLA (High-response Linear Actuator)
• 28 elements in 21 groups (6 FLD, 1 SLD)
• Inner Zoom
• NPC (Nano Porous Coating)
• Water- and Oil-Repellent Coating 
• AFL button (4 locations)
• 13 (Rounded Diaphragm) 
• Drop In Filter Holder
• Dust- and Splash- Resistant Structure
• Mount Conversion Service available

Key features:

• Focal Length: 300-600mm
• Aperture Range: f/4 to f/22
• L-Mount Lens 
• Full-Frame Format
• Angle of View: 8.2-4.1 degrees
• Optical Stabilization Algorithm OS2 
• 6.   Wide-Angle to Telephoto Zoom Macro Lens
• HLA (High-response Linear Actuator)
• 28 elements in 21 groups (6 FLD, 1 SLD)
• Inner Zoom
• NPC (Nano Porous Coating)
• Water- and Oil-Repellent Coating 
• AFL button (4 locations)
• 13 (Rounded Diaphragm) 
• Drop In Filter Holder
• Dust- and Splash- Resistant Structure
• Mount Conversion Service available