Unique to RF lenses, the additional control ring on the barrel of RF24-70mm f/2.8L IS USM that could be customised to control exposure settings; providing a more intuitive control especially while shooting. Filter Size: 82mm. Max aperture: f/2.8. Image Stabilisation of up to 5 stops. Canon RF 24-70mm f/2.8L IS USM 畫質優異 搭載五級防震的標準鏡皇. Canon 的 EOS R 系統推出至今一年，在機身方面不斷有新機的謠傳，但市場依舊是 EOS R 與 EOS RP在領軍，今年的 Canon 似乎已經不會有更新的相機。. 但RF鏡頭可是在去年就已經發表了未來三年的產品規劃 Wide Angle. Weight. 31.7oz. Color. Black. Experience the possibilities with the RF 24-70mm F2.8 L IS USM lens. Designed for the EOS R full-frame mirrorless camera system, this compact L-series lens combines a bright f/2.8 maximum aperture with a standard focal length zoom range. mrEZtM.