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Fast and silent autofocus,good image stabilization,super optical capabilities (colors+contrast),good zoom range 55-200mm,no zoom creep,lightweight
Mechanical zoom operation its slow, hard to get quick zoom, no inner zoom operation like Canon 70-200mm f4,no weather sealed, aperture ring without f marks, 62mm filter size, close focus only 1.1m , hight price.
Good zoom lens, but for action photography get the 50-150mm f2,8 version.