Sigma gooit weer een batch nieuwe en vernieuwde lenzen op de markt:
Sigma has announced the 85mm F1.4 EX DG HSM, a large-aperture short telephoto lens which is bound to pique the interest of budding portraitists.
Featuring a hypersonic focus motor with full-time manual focus override, the lens uses a 9-blade diaphragm for attractive background blur, and has a minimum focus distance of 85cm.
It comes with a lens hood adapter for ASP-C/DX users that extends the length of the hood to give more effective shading, and will be available in mounts for Canon, Nikon, Pentax, Sigma and Sony SLRs.
http://www.dpreview.com/news/1002/10022015sigma85mm.asp
Third on Sigma's long list of introductions is an image-stabilized fast standard zoom for APS-C SLRs.
The 17-50mm EX DC OS HSM offers a slightly wider angle of view than the company's previous models in this class, and alongside optical stabilization also adds a hypersonic autofocus motor for users of all mounts (Canon, Nikon, Pentax, Sigma and Sony).
It uses two elements made from Sigma's new 'FLD glass', plus two glass mold and one hybrid aspherical elements, to reduce aberrations.
The minimum focus distance is 28cm across the entire zoom range, giving a maximum magnification of 0.2x, and the 77mm filter thread does not rotate on focusing.
http://www.dpreview.com/news/1002/10022014sigma17mm50mm.asp
Continuing our way through Sigma's bag of goodies, we come to the widest-angle rectilinear lens yet made for APS-C DSLRs, in the shape of the 8-16mm F4.5-5.6 DC HSM.
Essentially an equivalent of the company's 12-24mm lens for full-frame, this features a disorientatingly-wide angle of view of 121 degrees for exaggerated perspectives.
It has a built-in petal shaped hood, HSM focusing with full-time manual override, and a minimum focus of 24cm.
Again, it will be available to fit Canon, Nikon, Pentax, Sigma and Sony SLRs.
http://www.dpreview.com/news/1002/10022011sigma8mm16mm.asp
Sigma has launched into PMA with a veritable salvo of interesting new products.
First up is the APO 70-200mm F2.8 EX DG OS HSM, an image-stabilised fast telezoom with ultrasonic-type silent focusing that provides a direct alternative to recent arrivals from Canon and Nikon.
The all-new optical design uses two elements made of Sigma's newly-developed 'FLD' glass (plus three of SLD glass) to reduce aberrations, a 9-blade circular aperture for attractive bokeh, and features full-time manual focus override.
The Optical Stabilisation system promises up to four stops benefit when hand-holding, and like other recent Sigma lenses, can be used by owners of Sony and Pentax cameras (the lens will also be available in Canon, Nikon and Sigma mounts).
Last but not least, a dedicated adapter that extends the length of the hood for APS-C users is supplied as standard
http://www.dpreview.com/news/1002/10022016sigma70mm200mm.asp
Last but not least of the lenses, we come to Sigma's upgrade for its popular 50-500mm ultra-telephoto zoom which now incorporates Optical Stabilisation - a hugely welcome addition to such a long lens.
Again Sigma claims the OS offers up to four stops benefit, and works with Sony and Pentax SLRs as well as Canon, Sigma and Nikon models, with the stabilized viewfinder image aiding in focusing and composition.
The all-new optical design uses 22 elements in 16 groups, including four SLD glass elements, but the filter size has grown to a whopping 95mm.
http://www.dpreview.com/news/1002/10022010sigma50mm500mm.asp