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Sigma 28-105mm f/2.8-4 Aspherical IF 35mm Zoom
The use of aspherical lens allows a large aperture F2.8 (at the wide-angle setting) in a compact body. It also reduces aberration and improves optical performance. SIGMA's unique four-group zoom system satisfactorily compensates for astigmatic aberration and distortion aberration throughout the zoom range.
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