Canon has improved tremendously and they gave us something new to chose from between the RF f/2.8 and f/4.0 aperture wide-range zoom lens. Majorly as a documentary or a sports photographer you need something that is sharp, focus, wide, and still gives you some kind of depth of field.
The RF 70-200mm f/2.8 is designed for professional use with a specialized element and a zoom lock that allows you to look at a particular distance. Also, it feels very handy, lightweight and durable. https://www.canon.co.uk/lenses/ef-70-200mm-f-2-8l-is-ii-usm-lens/ new addition to the lens is the zooming feature which allows you zoom externally compared to the former 70-200mm lens which is structured to zoom internally.
The RF 70-200 f/4.0 is also designed for easiness and its compatibility makes it very easy to carry around on every assignment. https://www.canon.ie/lenses/ef-70-200mm-f-4l-usm-lens/ it’s very much a high-performance camera suitable to deliver high-quality work.
However, this review video by “Jared Polin” expressively tells the usage and the intricate difference between the RF 70-200 f4 and RF 70-200 f2.8.
