- Designed specifically for the Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens, this tripod mount ring offers a perfect fit and enhanced stability during use, weighing only 170g. - Crafted from high-quality aviation aluminum, this lens collar features precision CNC machining and a hollow-out design for weight reduction, ensuring durability while remaining lightweight. The polished and anodized surface, along with stainless steel screws, adds to its longevity. - Constructed to meet the same standards as the original factory product, the lens support includes a 3M film inside for added protection. The inner diameter measures approximately 80.5mm, and the width is around 22.5mm, providing a secure fit for your lens. - The base of the lens bracket is equipped with a quick release plate feature. The plate measures about 75mm in length and includes both 1/4 and 3/8 screw holes, along with stainless-steel anti-slip screws to ensure a secure attachment to your tripod. Use Scenarios: - Perfect for wildlife photography, where stability and quick adjustments are crucial for capturing fast-moving subjects. - Ideal for landscape photography, allowing for secure mounting while using long focal lengths to capture distant scenes. - Great for sports photography, enabling quick repositioning and solid support during dynamic shooting situations.