Canon 300mm f/4 IS USM 'L' lens review with samples (Full-frame and APS-C)

This is a pretty popular lens with sports photographers and some wildlife photographers (although I still think 400mm is way better for wildlife). It's getting on a bit these days, though - is it still sharp enough? Find it here (Amazon affiliate link - I earn a commission on purchases. Be sure to buy the right lens for your system): https://geni.us/canonef300mmf4is All pictures and footage shot by me on Canon 6D and 70D cameras. This video's been sitting on my hard drive for a while, so it was made back when I still had a 70D. Support me on Patreon!   / christopherfrost   ...or on YouTube Memberships: https://www.youtube.com/christopherfr... Equipment I use to make my videos (Amazon affiliate link - I earn a commission on purchases): Canon EOS R5: https://geni.us/CanonEOSR5Body Canon EF-RF Adaptor: https://geni.us/CanonEFtoRF Sigma 50mm f/1.4 'Art': https://geni.us/Sigma50mm14Art Canon RF 35mm f/1.8 IS STM: https://geni.us/CanonRF35mm18Macro Marumi Fit and Slim CPL Filter: https://geni.us/MarumiFitSlim77 AudioTechnica AT2020USB+ Microphone: https://geni.us/AT2020USBPlusMic Rode Smartlav+ Microphone: https://geni.us/RodeSmartLavalierPlus Rode SC3 adapter: https://geni.us/RodeSC3MicAdaptor Zoom H1n Recorder: https://geni.us/ZoomH1nMiniRecorder DJI Mini 2 Drone: https://geni.us/DJIMini2FlyMore As an Amazon Associate, I earn from qualifying purchases. Music: 'Opportunity Walks', Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/b...