DG FOR DIGITAL
Sigma DG lenses are uniquely engineered for optimal use with APS-C size sensors. In these lenses, the size of the image circle is designed to match the smaller sized image sensor of DSLR cameras. This specific construction maximizes the optical benefits of digital cameras while retaining a sleek, compact and lightweight construction.
HYPER SONIC MOTOR FOCUSING (HSM)
Sigma's HSM lenses employ a motor powered by ultrasonic waves that produce a quiet, yet high-speed AutoFocus. You can enjoy high performance with low noise in a variety of shooting situations.
FLOW DISPERSION GLASS (FLD)
Sigma's FLD glass stands for F Low Dispersion, constructed from a material equal in performance to flourite glass. This specially engineered optic element allows for exceptional correction for residual chromatic aberration. Its density is less than traditional glass, allowing the overall construction of the lens to be lighter and more efficient.
INTERNAL FOCUSING (IF)
Internal Focusing lenses ensure maximum stability by moving the inner lens groups when focusing. This allows the lens physical length to remain constant while achieving perfect focus.
Bundle IncludesSigma 35mm F1.4 DG HSM Lens for Nikon (Black) Focus Silicone Band for Zoom Lenses Focus Camera Professional Dust Blower Top Brand 5 Piece Digital Camera Accessory Kit Focus Lens Cap Keeper 62mm UV/CPL/ND Filter Kit Sony 32GB Class 10 70MB/s SDHC Memory Card Bower SCB1450 Digital Pro Sling SLR Backpack - Black