Features

• Six UD (Ultra-Low Dispersion) elements and one Super UD element help to minimize chromatic aberrations and color fringing in order to provide greater clarity and color accuracy.
• An Optical Image Stabilizer helps to minimize the appearance of camera shake by five stops to better enable working in low-light conditions and with slower shutter speeds. Three distinct IS modes are available: standard single-shot mode, a panning-optimized mode, and a mode that only activates the Image Stabilizer during the exposure.
• Dual Nano USM system utilizes both a ring type USM and an STM mechanism to realize quick and accurate focusing that is also smooth and nearly silent to suit both photography and video applications. This focusing system also affords full-time manual focus control when working in the one-shot AF mode.
• Configurable Control Ring can be used to adjust a variety of exposure settings, including aperture, ISO, and exposure compensation.
• Protective fluorine coating has been applied to the front and rear element to resist fingerprints and smudges and to make cleaning these elements significantly easier.
• As a member of the esteemed L-series, this lens has a weather-resistant design that protects against dust and moisture to enable its use in inclement conditions.
• Rotation-type zoom ring features torque adjustment capabilities to fine-tune the handling of the lens or to prevent the lens from accidentally extending.
• Included lens hood features a side window to allow for easier adjustment of specialized rotating filters, such as polarizers, while the lens hood is attached.
• Compatible with optional Extender RF 1.4x and Extender RF 2x teleconverters, when used within the 300-500mm range of the lens, to further extend the effective focal length range.