Sigma

Key features:

• Focal length: 500mm
• Aperture range: f/4-32
• Nikon F 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: 15mm
• Aperture range: f/2.8-22
• Nikon F mount lens
• Nikon FX/35mm film format
• 180 degree angle of view
• Diagonal fisheye image fits into entire frame
• Flare and ghosting reduction
• 7 blade diaphragm

Key features:

• Focal length: 85mm
• Aperture range: f/1.4-16
• Nikon F 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: 20mm
• Aperture range: f/1.4-16
• Nikon F mount lens
• 35mm film / full-frame sensor
• Hypersonic motor focusing (HSM)
• Two aspherical elements
• Two FLD elements and five SLD elements
• Rounded 9-blade diaphragm
• Brass bayonet mount
• Super multi-layer coating