Next week’s expected announcement of the Sigma lens 500mm f/4 DG OS HSM
In the network appeared information that the company Sigma plans at the exhibition Photokina to present the Sigma lens 500mm f/4 DG OS HSM. New Japanese production will lead the lineup of telephoto lenses, a well-known manufacturer, designed for shooting sporting events and wild animals in their natural habitat.
According to preliminary data, the lens weighs 3310 g. For comparison, shown in figure AF-S Nikkor 500mm f/4E FL ED VR weighs 3090 g. the length of the new lens, the Sigma is 380,3 mm. Length of the Nikon lens is equal to 387 mm.
The optical design of the Sigma lens is constructed of sixteen elements in eleven groups, including two elements of FLD and one SLD. The aperture consists of nine petals. Option for Nikon cameras has an electromagnetic aperture control.
The effectiveness of the image stabilizer, which is equipped with a lens, is estimated at four levels of exposure. There are two modes of operation of the stabilizer: regular and pan.
The lens barrel is made of magnesium alloy, mount — brass blend — made of plastic reinforced with carbon fiber. The lens is equipped with bracket for mounting on a tripod. Is possible to install a lens on the camera using the teleconverter and the use of plug-in polarizing filter. Lens supports connection to a docking station with USB interface for software updates and adjust the focus. It has protection against dust and splashes. About the price and timing of sales while no data.