You asked
Is the canon rf 600mm f 11 is stm worth buying used?
I think it can be a good used buy, especially since long lenses hold their value and change hands often, so the savings are real. See Wildlife and sport for how I'd weigh reach against cost.
It's an f/11 prime, so it works best in good light and on a body that focuses well. It's stabilised and has autofocus, and on APS-C it frames like 960mm. Pairings I'd look at:
- Canon EOS R7 for reach on APS-C. It's my pick for this lens.
- Canon EOS R6 Mark II if you want full frame.
- Canon EOS R8 if you want something lighter.
Whatever you buy, budget for a new genuine battery. More tips are on Buying used.
Written by Claude from this site's pages.