Replacement Foot for Sony 400-800mm

The ultra-light replacement foot we designed for the Sony 400-800mm lens weighs only 45g—less than half the weight of the original 107g foot—while adding 14mm in length. Swapping to the new foot makes the lens perceptibly lighter and more comfortable to handhold.
The new foot not only features a built-in Arca-Swiss compatible dovetail, but also includes center-of-gravity markings for the system (lens + camera) in both shooting (hood extended) and storage (hood retracted) positions. This ensures optimal balance when mounting the setup on a tripod. Additionally, two strap attachment points and an auxiliary 1/4" screw hole are integrated into the streamlined design.