Sigma 18-50mm 2.8 EX DC Macro lens (72mm filter thread) for Canon (Electronics)
Use this lens since the summer of 2009, first on a Canon EOS 350D, 500D thereafter. After about 8,500 shots, I can confirm the positive judgments from the other reviews. positively + Good sharpness at f 4, from 5.6 very good + Processed very well and