The Sigma SA mount Sigma 70-200mm F2.8 HSM Sports DG OS Lens is a telephoto zoom defined by its durable & thick design. The max fast F2.8 aperture performs exceptionally at low light while offering customized control over depth of field & focus for isolated images. Ten low dispersion elements are carefully used to reduce aberrations and colour fringing. The great multi-layered oil-repellent coating additionally helps in flare and ghosting reduction while improving colour precision and balance. Not only this lens is for sport shooter but also for portrait shooters which still brings their desired super natural beautiful creamy blurry background
The intelligent OS stabilisation greatly reduces camera shakes during handheld photography. The Hyper-sonic motor with an improved algorithm provides quiet & high speed precision auto focus even with full-time manual focus override setting. When coming to built quality this lens seems very promising and well designed. This sigma 70-200 body crafted from magnesium alloy includes many seals to protect against moisture, dirt and dust while shooting. This lens is so well coated that even photographing directly into the sun produces barely any flaring at all. This go to F2.8 Sport lens also has a rotating barrel with 90° click and three programmable buttons on one side of barrel. It has 1.2 meter close distance focus but you can change it on the lens to set it to 3 meter or customize is by any amount using the Sigma USB doc. The USB allows to update your frame ware and adjust your lenses back focus at 4 different focal lengths (setting).
You can also limit your focus range eg you know that when you will be shooting your subject it will be in a certain distance, you can limit the close focus so that the lens doesn't focus on the closer objects. On the lens software you have 2 different C1 and C2 custom settings within each custom setting you can alter three different perimeters. The first is AF customization in this you can change between three different modes, one for speed the other for smooth performance designed for more natural looking focus for video and the last for standard profile in between both of these settings. It also comes with three OS settings Dynamic view for fast imaging, Moderate view for video shooting and lastly Standard View mood which is a mixture of the two. It also has 2 focus limiter lock on horizontal and vertical orientation. While featuring 11 diaphragm blades is has 9-FLD elements and 2-SLD elements as compared to its previous 2010 model which only had 2 for both. This 70-200 Sigma HSM lens can also be used with crop sensors.Focus button, Focus limiter lock, OS lock and either automatic focus, full manual focus and manual override focus lock.
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For more information about, Sigma 70-200mm F2.8 HSM Sports DG OS Lens for Canon EF website.
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