Canon has unveiled the latest addition to its EF lens range – the EF-S 55-250mm f/4-5.6 IS STM. The new model is the first EF-S telephoto zoom lens to feature Canon’s advanced Stepper Motor (STM) technology, alongside a 3.5-stop optical Image Stabilizer. STM technology ensures that the EF-S 55-250mm f/4-5.6 IS STM provides high-performance autofocus (AF) when capturing stills and smooth, near-silent AF in movies with compatible cameras. Offering fluid continuous focus tracking when shooting movies of moving subjects, STM also provides clean and natural focus transitions when the focus shifts from one subject to another. Audio on movie footage can be captured without the intrusion or distraction of focusing noise from the lens, thanks to the near-silent STM mechanism. The EF-S 55-250mm f/4-5.6 IS STM incorporates a new design, featuring Canon’s optical Image Stabilizer (IS) technology. The 3.5-stop advantage over non-IS models helps to reduce the effects of camera shake – which
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