Thank you Joel and Brant so much for your replies.


Joel, could you please test your R5 with your son’s 500 f/4 IS Mark I when you get a chance? I just want to know what the speed of the mechanical shutter is when shooting with a grip and two genuine R5 batteries.


I plan to have the genuine Canon battery grip and all new R5 batteries. I also plan to use the ES more to take advantage of the 20 FPS, but would like to use the MS when situations call for. I’ll be happy with 8 FPS but 5/6 is too slow. Please let me know, thank you so much!


Nate