My go-to setup for aviation photography: I use the Canon EOS R7 paired with the Canon RF 100-400mm F5.6-8 IS USM for all the long-distance action when aircrafts are high in the sky, and switch to the Sigma 18-35mm f/1.8 DC HSM Art when I'm walking around statics. For Videos, im using my iPhone 17 Pro.
(The Canon RF 100-400mm is currently a temporary setup for long-distance shots until I upgrade soon)