Sigma 24-105mm f/4
Sigma 24-105mm f/4 DG OS HSM from Sigma is an Art-series zoom covering a useful wide-angle to the short-telephoto range. Featuring a constant f/4 maximum aperture, this lens strikes an ideal balance between a portable form factor. Along with a bright enough design for working in available lighting conditions. Complementing this design, an Optical Stabilizer helps to minimize the appearance of camera shake. Throughout the zoom range for sharper handheld shooting. A Hyper Sonic Motor also contributes to intuitive handling and provides especially fast and quiet autofocus performance along with full-time manual focus override.
Complementing the physical design, this lens is also distinguished by its advanced optical layout, which includes a series of low dispersion elements and three aspherical elements. These specialized elements reduce chromatic and spherical aberrations throughout the zoom range in order to realize a high degree of sharpness and clarity.
Constant f/4 maximum aperture maintains a portable form factor and also offers consistent performance throughout the zoom range.
Two F Low Dispersion (FLD) elements and two Special Low Dispersion (SLD) elements markedly reduce chromatic aberrations and colour fringing throughout the zoom range for improved clarity and color accuracy.
Three aspherical elements control spherical aberrations and distortion for increased sharpness and accurate rendering.
The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
Optical Stabilizer system minimizes the appearance of camera shake to benefit making sharper imagery when shooting handheld.
Constructed using a Thermally Stable Composite (TSC) material for greater precision and use in wide temperature variations. Additionally, a brass bayonet affords improved mounting accuracy and rigidity.
This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.