Tamron 100-400mm f/4.5-6.3 Di VC USD 鏡頭用三腳架環

Finally a mount that actually feels solid on the lens—the metal construction gives me confidence even when swinging the rig onto a gimbal. The knurled knob is easy to grip and tighten, and it doesn't add much weight to the setup.

Finally, a mount that lets my 100-400mm lens sit perfectly centered on the tripod collar without that awkward cantilevered feeling. Locking it on took maybe ten seconds, and it held rock-solid through a whole afternoon of landscape shooting.

Used it for a full day of shooting birds and the balance is perfect, no more front-heavy wobble on my gimbal head. The collar rotates smoothly and locks tight, exactly what I needed for quick vertical shots.