|Sigma 120-300mm f/2.8 DG OS HSM lens|
Generally, large aperture lens like the 300mm f/2.8 have been loved by professional users due to their brilliant capacity of depiction and bright aperture value. It is one of the essential focal lengths in the world of professional photography. Based on the concept that turning a 300mm f/2.8 lens into a zoom lens would enable photographers to further expand the scope of shooting, Sigma has introduced their 120-300mm f/2.8 lens and announced it during the CES in Las Vegas.
Canon has taken this concept even further, and about two years ago, announced the development of their EF 200-400mm f/4L IS + 1.4X lens, with a built-in extender. This lens should be officially released some time in the first quarter of 2013. The Consumer Electronic Show is going on right now but Canon seems to be holding back their major new product introductions for now. There is a Camera and Photo Imaging show coming up at the end of January in Japan and the Focus On Imaging show will take place in the UK in March. The photography world is eagerly waiting for some major launch events from Canon soon. Take a look at my earlier post on the Canon EF 200-400mm lens here.
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