What is the canon rf 100 300mm f 2 8l is usm good for?

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From Canon RF 100-300mm f/2.8L IS USM: Canon RF 100-300mm f/2.8L IS USM: A zoom lens by Canon for Full frame cameras, 100-300mm f/2.8. A professional sport and wildlife zoom that stays at f/2.8 throughout. Specs - Maker: Canon - Focal length: 100-300mm (zoom) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Canon RF - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon RF): as marked, 100-300mm. - On APS-C (Canon) (Canon RF): ...

From Wildlife and sport: Reach: Focal length is the first thing to sort out. - Sport from the sideline and larger animals: 70-200mm to 100-400mm on full frame. - Birds: 600mm full-frame equivalent and beyond. Birds are small and far away; a common saying is that you never have enough reach for them. Smaller sensors help here. A 100-400mm lens on APS-C gives the view of about 150-600mm on full frame, and on Micro Four ...

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