Canon RF 100-400 vs Canon RF 100-500, Compared

I have owned the Canon RF 100-500 F/4.5-7.1L lens for two years, and I absolutely love it. So, why did I buy the RF 100-400 F/5.6-8? It's shorter, slower, and not an L-class lens. What's it good for? Will it stay in my bag? I took both lenses out for a little bird photography to compare them. Watch and see the results!

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My kit:

Canon R5: https://amzn.to/3EAZWRy
Canon R6: https://amzn.to/3xQPa5H
Canon RF 16mm F/2.8: https://amzn.to/3xQPa5H
Canon RF 14-35 F/4L: https://amzn.to/3Sr61p8
Canon RF 24-105mm F/4L: https://amzn.to/3SpqURP
Canon RF 35mm F/1.8: https://amzn.to/3m81RX9
Canon RF 100mm F/2.8L Macro: https://amzn.to/3knTpmc
Canon RF 100-500mm F/4.5-7.1L: https://amzn.to/3Z10h8j
FLM CP30-L4 II tripod
RRS BH-40 ball head: https://amzn.to/3YVk88K
Induro CLT203 tripod: https://amzn.to/3IRAQAl
Manfrotto XPRO ball head
NiSi V5 filter holder & circular polarizer
NiSi 100mm 3-stop, 6-stop, and 10-stop ND filters
Lee 100mm 15-stop ND filter
Lee 100mm x 150mm 3-stop medium grad ND filter
GoPro Hero12: https://amzn.to/3XXpHlW
GoPro Media Mod
Ulanzi MT71 Vlog Handle: https://amzn.to/45v7M9G
Rode VideoMicro shotgun mic: https://amzn.to/3lSL6PF
Rode Wireless Go II mic & receiver: https://amzn.to/3IwWnN8
Rode Lavalier Go mic: https://amzn.to/3YXDdaw

Editing software:

DaVinci Resolve Studio 18 (https://www.blackmagicdesign.com/produ hicts/davinciresolve/)
Camtasia: https://www.techsmith.com/video-edito...

Music:
Epidemic Sound (https://www.epidemicsound.com​); YouTube Studio
Vegetable Police (https://vegetablepolice.bandcamp.com/)


Other Social Media:

Instagram:   / johndrummondphoto  
X: https://X.com/PhotoDrummond
Flickr: https://www.flickr.com/photos/9722646...
Website: https://jdrummondphoto.com