After a bit less than 2 years owning the RF100400mm F5.68 IS USM, I am doing my honest, humble little review just now. And it was fun crossing Palawan from East to West to reach one of the famous beach Near Puerto Princesa, Nagtabon Beach. You will see photos of differents styles of photography, pros and cons, a little video in 4k recorded with this lens, and more.

THINGS THAT I USE AND LOVE:
(As an Amazon Associate I earn from qualifying purchases, but you do not pay anything more)

Lens hood RF 100400mm https://amzn.to/3J67JIT (Amazon)
Canon RF 100400mm. https://amzn.to/430Tkqz (Amazon)
Godox V350 for FUJIFILM https://amzn.to/3UZCiqX (Amazon)
Raynox DCR 250 https://amzn.to/3V5Jou5 (Amazon)
Canon R7 https://amzn.to/3P1MOtT (Amazon)
Fujifilm XT5 https://amzn.to/3Im4Va0 (Amazon)
Laowa 65mm for Fujifilm X mount https://amzn.to/4bUDRfL (Amazon)
Meike extension tubes for Canon RF mount https://amzn.to/3ThN0rg (Amazon)
Canon RF800mm F11. https://amzn.to/4c0csc6 (Amazon)
Sigma 150600 C. for CANON EF mount. https://amzn.to/3SYNGRc (Amazon)
7Artisans 60mm macro FOR FUJIFILM X mount https://amzn.to/3TkP2ar (Amazon)
7Artisans 60mm macro FOR CANON RF mount https://amzn.to/3wDcsii (Amazon)
Canon RF100500 https://amzn.to/4bSdNSB (Amazon)
My cheap Tarion camera backpack. https://amzn.to/49ASC5G (Amazon)

Music:
Alon Peretz Turning Point
Matthias Förster Gate to Eternity
Borden Lulu Wrath of Ruth