>>3655590Oh, yeah. There's also this new one to consider. 50-200mm f2.8-4.0. With 2x teleconverter it's f5.6 at 400mm. A bit faster, and quality wise it's also better than 100-400. Samples I've seen taken with it are really stunning.
https://www.flickr.com/photos/hrpictures/49444595568/