Spherical vs Aspherical Lenses-upload

Panasonic Lumix 100-300mm f/4.0-5.6 G Vario Aspherical MEGA OIS Lens for Micro Four Thirds Interchangeable Lens Cameras

SIGMA LENS 28-200mm f3.5-5.6 DL Aspherical Hyperzoom Macro SLR Camera Lens

Sigma 24mm f/1.8 EX Aspherical DG DF Macro AF Wide Angle Lens Kit, for Canon EOS Cameras with Tiffen 77mm UV Wide Angle Filter, Professional Lens Cleaning Kit

[SPECIAL DISCOUNT] Panasonic Lumix 100-300mm f/4.0-5.6 G Vario Aspherical MEGA OIS Lens for Micro Four Thirds Interchangeable Lens Cameras

Quantaray 28-90mm f/3.5-5.6 aspherical multi-coated lens AF-D lens with Nikon mount

[SPECIAL DISCOUNT] Voigtlander Nokton 35mm f/1.2 II Aspherical Wide Angle Leica M Mount Lens - Black

Opteka 6.5mm f/3.5 Manual Focus Aspherical Fisheye Lens for Sony Alpha A99 A77 A65 A58 A57

Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF Macro Lens A-Mount for Sony and Konica Minolta

Tamron AF 18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras

Voigtlander Ultron 40mm f/2 SL-II Aspherical Compact Pancake Manual Focus Normal Lens for Nikon Film & Digital Cameras REVIEW

Vivitar 8mm f/3.5 HD Aspherical Fisheye Lens for Canon EOS Rabel 7D 70D 50D 40D 30D 20D 10D

[BEST BUY] Tamron AF 28-300mm f/3.5-6.3 XR Di LD VC (Vibration Compensation) Aspherical (IF) Macro Zoom Lens for Canon Digital SLR Cameras

Rokinon 24mm F/1.4 Aspherical Wide Angle Lens for Canon RK24M-C

Tamron AF 28-80mm f/3.5-5.6 Aspherical Lens for Nikon Digital SLR Cameras (Model 177DN)

Sigma 135-400mm F4.5-5.6 APO Aspherical Lens for Nikon SLR Cameras

Tamron AF 17-50mm F 2.8 XR Di-II LD SP Aspherical (IF) Zoom Lens for Canon Digital SLR Cameras

Tamron AF 18-270mm f 3.5-6.3 Di II VC PZD LD Aspherical IF Macro Zoom Lens for Canon DSLR Cameras

Voigtlander Ultra Wide-Heliar 12mm f/5.6 Aspherical M Mount Lens for Leica M - Black

Sigma 28-200mm F3.5-5.6 Aspherical Hyperzoom Macro Lens for Sony Alpha and Konica Minolta SLR

Sigma 170-500mm f/5-6.3 APO Aspherical Lens for Nikon SLR Cameras