JOHNNY892 說 Jul 31, 2013 06:51AM 進擊的適馬~暨18-35 f1.8後,又準備24-70 f2跟135 f1.8photorumors.com/2013/07/29/sigma-rumored-to-announce-a-new-24-70mm-f2-os-hsm-full-frame-lens-next-year/