Since Zenelli first emerged, their Carbon Fiber feet have been providing me with excellent photography support! I used one on my 180-400VR and loved it; then when they released their brand new Foot for my Z600f4TC I was overjoyed! Their strength and security, weight saving properties and size-specific feel/size feel make for an outstanding combination. When shooting handheld, using my foot as both support for lens as well as handle are all hallmarks of quality for me; Zenelli excels with Arca Swiss clamps but works perfectly on my 180-400VR! Trust your glass into their hands and you too will say: Zenelli makes great footing!