When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Canon’s EF 500mm f/4L IS USM II is going to be a zoom for the RF mount first. We have confirmed that a Canon RF 200-500mm f/4L IS USM will likely be coming in Q4, or perhaps in … Continue reading Canon RF 200-500mm f/4L IS USM confirmed, likely in Q4 [CR3]