The Wimberley AP-500 is a quick-release foot specifically designed for Nikon AF-S 500mm f/5.6E PF ED VR telephoto lenses. This precision-engineered component offers secure mounting compatibility with Arca-Swiss quick-release clamps, ensuring a reliable connection between the lens and support system. The AP-500 features both 1/4-inch and 3/8-inch threaded holes for mounting, providing versatile compatibility with standard tripod heads and monopods beyond quick-release systems. Durability and stability are prioritized in this replacement foot, with dual safety stops preventing accidental release from the clamps. The design also maintains flash rail compatibility and preserves the full functionality of photographic equipment. Wimberley employs finite element analysis and empirical testing in its development to optimize the weight-to-stiffness ratio, resulting in a component that offers superior stiffness without unnecessary mass. Unlike alternatives that prioritize manufacturing convenience or aesthetic aspects, the AP-500 focuses on structural integrity and performance reliability. Precision machining ensures smooth operation in compatible clamps while maintaining secure locking mechanisms. This replacement foot serves as a long-term solution for photographers needing reliable support for their 500mm telephoto lens, especially under demanding field conditions where equipment stability is essential. The AP-500 meets the professional standards expected by photographers using high-quality telephoto optics, providing a secure interface between the lens and support system that withstands intensive use over extended periods.