キヤノンEF700mm F28L IS III USMは、 EOSカメラ用の望遠ズームレンズです。 ISはImage Stabilizer(手ブレ補正機能)の略称で す。 USMはUltrasonic Motor(超音波モーター)の略 称です。 カメラのファームウェアについてThe EF 70–0mm f/28L IS III USM lens features an incredibly bright zoom with an f/28 maximum aperture that stays constant throughout the zoom range The EF 70–0mm f/28L IS III USM's bright image even enhances AF performance, sending more light to more areas of the AF sensor to help facilitate a faster, more accurate focusCanon EF 700mm f/28L is III USM Lens Canon EF 700mm f/28L is III USM Lens Bundle with Premium Accessories Including 64GB Sandisk Memory, ND Variable Filter, Backpack, Monopod, High Def Filter Kit & More Canon Ef 70 0mm F2 8l Is Iii Usm Review Photography Blog Canon ef 70-200mm f/2 8l is ii usm