You asked

Is the canon rf 600mm f 11 is stm good for sports?

I wouldn't pick this lens first for sport. On full frame it gives you 600mm as marked, and it's stabilised with autofocus, so it's reach you can use. But f/11 is dark, and fast sport in dim halls or on overcast evenings needs light and quick focus. The site's sport advice from the sideline is a 70-200mm to 100-400mm on full frame, and for serious sport a 200-600mm or 150-600mm zoom. Those give you more usable light and range.

If you already own this lens, it will work for daylight outdoor sport at a distance. Check the Canon RF 600mm f/11 IS STM page for the bodies it fits. For a buying plan, see the wildlife and sport picks, and buying used can save a lot on long lenses.

Written by Claude from this site's pages.

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