The LCF-101 lens replacement foot with built-in-dovetail mounting made specifically for the Sony FE 100-400mm f/4.5-5.6 GM OSS and Sony FE 70-200mm f/2.8 GM OSS lenses will be lighter, lower in profile, and provide the best possible stability for your lens. The Really Right Stuff LCF-101 foot replacement is precision machined from a solid block of 6061-T6 aluminum and is fully compatible with 1.5" RRS Dovetail Standard
. This updated foot (updated design based on LCF-100) replaces the Sony lens collar foot on Sony FE 100-400mm f/4.5-5.6 GM OSS and FE 70-200mm f/2.8 GM OSS Lens.
1. To remove the Sony foot, unscrew the lock knob, depress the spring-loaded tab, and slide the foot forward.
2. To install the LCF-101, slide it on from front to back until you feel it snap into place, then tighten the lock knob.