The Tripod Mount Ring accessory is designed specifically for the 35100mm FullFrame zoom lens, providing a stable and secure attachment for tripod mounting. Designed specifically for the 35150mm f/22.8 AF lens, this Tripod Collar Mount Ring from Rokinon provides added stability to your lens when attached to a tripod. With its efficient weight distribution, more precise video and image capturing is ensured. Features. For 35150 mm f/22.8 AF Lens. Stabilizes Lens cameraSpecifications. Tripod Mounting Thread 1x 1/420 Female. Weight 1 lbs