Professional grade lenses are big and heavy, and mirrorless cameras do nothing to remedy that. In fact, I added a battery grip to my APS-C body for long days s

Professional grade lenses are big and heavy, and mirrorless cameras do nothing to remedy that. In fact, I added a battery grip to my APS-C body for long days shooting with my 400/f4 to add grip surface & balance the weight. I was getting carpel tunnel before I added the grip.