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• Full-Frame | f/2.8 to f/22
• Fast L-Series Telephoto Zoom
• Dual Nano USM AF System
• 5.5-Stop Image Stabilization
• Floating Focus Design
• Internal Zoom and Focusing Design
• Function/Focus Preset Selector Switch
• Fluorite, UD, and Aspherical Elements
• ASC, SSC, and Fluorine Coatings
• Weather-Sealed Design

From photojournalism and pro-level recording to fashion and indoor sports, this lens brings zooming capabilities to the proven 300mm f2.8 concept aimed directly at professional and high-end video and still image users.

• Fast f/2.8 maximum aperture throughout the whole zoom range for great control over depth of field, bokeh, and low-light shooting with fast and reliable autofocus
• Four UD (Ultra-low Dispersion) glass elements resulting in amazing sharpness and super smooth backgrounds
• Canon SSC (Super Spectra Coating) to minimize ghosting and flare
• Two Nano USMs achieve outstanding image quality throughout the focusing range thanks to two focusing groups that are independently actuated