It is very satisfying shooting with Canon R5 and Canon RF100-500L at Professional Triathletes Organisation (PTO) Asian Open 2023. . It is worthy successor to the already impressive EF100-400Lii. The sharpness and contrast from that lens is breathtaking. Coupled with fast auto-focus on Canon R5, you can achieved beautiful shot without too much effort. In addition, the lightweight nature of the lens also allows me to move easily from one shooting location to another. That portability also mean that I can focus more on the composition as well as moment. I can use it to take classically sport and action photos as well as stage presentation photos. Looking forward as usual to shoot more actions with RF 100-500L