Key Technical Specifications
- Focal Length Range: 100–500mm (offers an extended 100mm reach over older EF 100-400mm lenses).
- Maximum Aperture: Variable f/4.5 (at 100mm) to f/7.1 (at 500mm).
- Autofocus Motor: Dual Nano USM motors driving floating lens groups for near-instant, silent focus tracking.
- Image Stabilization (IS): Offers 5 stops of optical stabilization, which increases up to 6 stops of coordinated control when paired with a camera body featuring In-Body Image Stabilization (IBIS).
- Filter Thread Size: 77mm.
- Weight: 1,365 grams (approx. 3 lbs) without the tripod collar, making it highly hand-holdable.

























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