Leofoto LH 40 Ball Head 20KG Low-Profile Ball Head. The Leofoto LH-40 ball head is a medium-sized, professional ball head designed for photographers and videographers who need a robust, precise solution for photography and videography with heavy camera and lens combinations. Made from high-quality aluminum, it provides stability for mirrorless cameras, DSLRs, or heavy lenses, ideal for landscape, architectural, or studio photography. Technical Highlights: Compatibility: For cameras with Arca-Swiss compatible quick-release plates (e.g., Sony A7R IV, Nikon Z9 with 100–400mm lens). Maximum load capacity: 20 kg (44 lb). Item No.: LH-40. Ball Head: Material: CNC-machined T6061 aluminum, anodized black or camo for durability and light weight. Weight: 491 g (1.08 lb). Dimensions: Height 87 mm (3.42 inches), ball diameter 40 mm (1.57 inches), base diameter 57 mm (2.24 inches). Mounting: 3/8"-16 thread for tripod attachment; compatible with most tripods (e.g., Leofoto LS-324C). Arca-Swiss compatible quick-release system with QP-70 quick-release plate (70 mm) included. 360° panorama adjustment with independent pan lock and laser-engraved 2.5° markings. Two 90° cutouts for easy switching between portrait and landscape orientation. Three control knobs: main lock, friction control, and panning lock for precise adjustments. Integrated bubble level and distance markings for accurate alignment. Features: Low-profile design: Low height and large ball provide improved stability and a lower center of gravity. Smooth movement: Japanese ball bearings and Delrin bushing minimize friction for smooth, stepless movement without jerking. Friction control: Allows fine adjustments to camera weight, ideal for heavy lenses without sagging. Robust construction: Seals on the knobs protect against dust and moisture, making it suitable for outdoor use. Compatible tripods and plates: Tripods: Leofoto Summit series (e.g., LM-364C, LM-365C). Leofoto Ranger series (e.g., LS-324C, LS-365C). Other tripods with a 3/8"-16 thread (e.g., Gitzo Systematic, Benro Mach3). Quick-release plates: Leofoto QP-70N, NP-65, PLA-130. Other Arca-Swiss compatible plates (e.g., Induro PU-60, Benro). Note: Not compatible with proprietary systems such as Manfrotto RC2 or Cullmann SK. Included: Leofoto LH-40 ball head (black, camo, or blue), QP-70 quick-release plate, Allen key, carrying case. Warranty: 10 years. Usage notes: Optimal for setups up to 20 kg; ideal for heavy cameras (e.g., Nikon Z9 with 100–400 mm). Careful balancing is required under maximum load to prevent sagging. Users praise the smooth movement and build quality (e.g., "no juddering, holds Sony A7III with 100–400 mm steady"). Regular cleaning of the ball and screws is recommended, especially after use in dusty or humid conditions. The bubble level is difficult to read in low light; an external bubble level may be helpful.