Kirk Lens Foot for Sony FE 400mm f/2.8 GM OSS and FE 600mm f/4 GM OSS Lenses

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The versatile Replacement Lens Foot for Sony FE 400mm f/2.8 GM OSS and FE 600mm f/4 GM OSS Lenses from Kirk Enterprises replaces the original lens foot, attaching directly to the lens collar using the included mounting screws and hex key. The replacement foot provides a lower profile, lighter weight option than adding a lens plate to the existing foot. The double-dovetail design is compatible with most Arca-Swiss style clamps, ball heads, and gimbal heads. The design also allows Arca-Swiss style accessories to attach to the bottom or top of the lens foot, but still provides enough clearance to store the lens hood in the reversed position.

This replacement foot is made from durable 6061-T6 aluminum with a black anodized finish, making it resistant against scratches and corrosion for years of reliable use. Optional safety stop screws may be installed on the bottom to prevent the lens from accidentally being pulled out or released if a clamp is partially open, and 1/4"-20 and integrated 3/8"-16 sockets provide additional mounting options if no clamp is available.


  • Sony FE 400mm f/2.8 GM OSS Lens
  • Sony FE 600mm f/4 GM OSS Lens

Arca-Swiss Style Quick Release Compatibility

  • The double-dovetail design provides secure, stable mounting to Arca-Swiss compatible clamping devices

Black Anodized Aluminum Construction

  • The 6061-T6 aluminum foot is resistant to abrasions and corrosion


Mounting Sockets

  • Integrated 1/4"-20 and 3/8"-16 mounting sockets provide multiple mounting options

Safety Stops

  • Optional included steel safety stop screws prevent accidentaly releasing the lens when a ball head clamp is partially open