Sigma has announced the launch of its first ultra telephoto lens specifically for full-frame mirrorless cameras, as well as a pair of teleconverters, a new USB dock and a new mount options for three of its prime Contemporary lenses.
100–400mm F5–6.3 DG DN OS Contemporary
While this new lens might look similar to its previous 100-400mm lens, the 100-400mm F5-6.3 DG DN OS Contemporary has been designed ‘from the ground up for mirrorless camera systems.’ Specifically, the lens will be available in Sony E-mount and L-mount.
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It’s designed to cover fulll-frame image sensors and is constructed of 22 elements in 16 groups including one low dispersion element (FLD) and four special low dispersion (SLD) elements. It uses a stepping motor for autofocus, has a nine-blade aperture diaphragm, a minimum aperture range of F22–29 and a 67mm front filter thread. At 100mm it has a minimum focusing distance of 112cm (44”) and at 400mm it has a minimum focusing distance of 160cm (63”). The lens measures in at 86mm (3.4”) diameter, 197mm (7.8”) long and weighs 1,135g (40oz).
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https://www.dpreview.com/news/9769614177/sigma-announces-100-400mm-f5-6-3-for-e-mount-and-l-mount-teleconverters-and-more
