Hi everyone,

Looking for your experience on the R5 and EF 500 f/4L IS Mark 1 FPS. I read that the R5 mechanical shutter FPS drops to 5/6 when paired with this old lens. 5/6 FPS is way too slow for bird photography. According to Canon Canada the EF 500 f/4L IS Mark I supports the R5 20 FPS electronic shutter. Is electronic shutter the way to go? I shoot birds with a 1DX right now and want to upgrade to the R5 and I want to use my EF 500 f/4L IS Mark I for as long as I can. Thank you for your comments!