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A 300 mm focal length and f/2.8 aperture model is one of the classic journalistic lenses, ideal for sport or nature photos. Sigma has the cheapest instrument of these parameters on its offer. Although one has to pay 3000 $ for it, the prices of such instruments offered by other producers are even higher. Sigma 300 mm f/2.8 EX HSM APO looks very promising then, and we would like to present its full review today. Read more >>>