Getting any moving object is difficult, getting a fast moving object crisply is near impossible…unless you practice, practice and practice some more. It is easy enough to do, you don’t need anything more than a busy street, road or highway to practice the technique. Once you mastered large objects then you can start on smaller objects such as someone tossing a ball such as a softball, football or someone tossing a tennis ball for their dog. Then you’ll be ready to go after the hardest thing to pan…birds. Canon 7D MkII Canon EF 100-400mm L f/5 1/60 100mm ISO 125 Light conditions: Overcast at dusk.