Conclusion
Overall, the Canon RF 100-300mm f/2.8 should be an excellent lens for wildlife photographers. Its combination of a versatile focal length range, fast f/2.8 maximum aperture, and advanced optical design make it ideal for capturing wildlife images. 300mm is limited in many situations, but the fast aperture should make this lens a great choice for teleconverter use.
The lens’s image stabilization system and fast autofocus performance make it easy to shoot handheld in challenging conditions, while its rugged construction and weather-sealed design ensure that it can withstand the demands of the outdoors. Additionally, the lens’s compact and lightweight design makes it easy to carry around, allowing wildlife photographers to easily move around and capture images without being weighed down.
With its exceptional image quality, fast autofocus performance, and advanced features, the Canon RF 100-300mm f/2.8 is a good option for wildlife photographers who demand the best in their gear.
The only downsides are the high price, the size/weight, and the fact that you will need to use teleconverters to achieve longer focal lengths (if quality hold sup, this point could be moot).