If you believe the online forums you can only shoot action or sport with a Canon EOS 1d X or a Nikon 4D with very expensive f2.8 lenses. At the very least you should be using a Nikon 500d or Canon EOS 7d Mkii because it is impossible to use anything else. I have to say this is like most things written by the denizens of photography forums complete and utter rubbish.
I started photographing rodeo with a Canon EOS 300d and an EF 75-300mm f3.5-5.6 IS lens. Hardly state of the art sports equipment back in 2005. The buffer for RAW was 6 frames and it did a massive 3fps and there was no continuous auto focus when shooting RAW – you could only get that in the sports picture mode which then limited you to shooting jpg.
The next big jump up was the Canon EOS 5d. Again no sports shooting, terrible buffer, slow frame rate and apparently the AF couldn’t cope with anything but a slow walking bride on a bright day.
Today we have the advent of mirrorless cameras. The cognoscenti say that only a DSLR with an optical viewfinder can capture action, mirrorless cameras cannot and will not do it. Well as I said at the beginning there is a lot of rubbish spouted on photography forums. I follow Nike’s advice – “Just Do It!”