Jobu Design Replacement Foot for Canon 600mm f/4, 800mm f/5.6 & 400mm f/2.8 Lenses
The Jobu Design LF-C604 Replacement Foot for Canon 600mm f/4, 800mm f/5.6 & 400mm f/2.8 Lenses replaces the factory foot of your Canon lens and introduces an Arca Swiss-style profile, for easy attachment to a corresponding quick-release clamp of a Gimbal