iShoot Lens Collar Tripod Mount Ring IS-TA1840 Compatible with Tamron 18-400mm f/3.5-6.3 Di II VC HLD B028 (EF / F Mount) Bottom is Arca Fit Quick Release Plate Feature for RRS / Arca-Swiss Fit Ballhead Clamp Main Features: 1. The lens collar is made of high-density Aviation Aluminum, lightweight and solid; precisely machined by world-class high-end CNC turning center; hollowed-out work processed by Multi-Diamond Cutter finely; 2. The Tripod mount ring surface using vibration polishing technology and multiple anodic oxidation, greatly increased the color uniformity of the metal surface; the appearance and exquisite workmanship is much better than similar products made by mold; 3. The tripod collar using laser scanning technology to accurately obtain lens parameters, and then accurately carve out the shape of the inner diameter of the tripod ring according to the data; 4. Bottom quick release plate is AS standard, compatible with RRS / ARCA-SWISS / ISHOOT ball head of Arca 39mm fit, suitable for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK. Package Includes: 1 x iShoot Lens Collar IS-TA1840 for Tamron 18-400mm F3.5-6.3 Di II VC HLD B028 (Note: The other items in the photos not listed here are for illustrating only, not included)

5. The tripod ring is made of Aviation Aluminum, CNC precisely machined, hollow-out weight reduction design, polished and surface anodized finish. The appearance and exquisite workmanship are much better than similar products made by mold. 4. The Lens support bottom reserved 1/4" and 3/8" screw holes and stainless-steel anti-slip screw for fixing lens to tripod directly. 3. The tripod collar bottom is added 55mm long Arca fit quick release plate feature, can be used with 39mm Arca-swiss fit tripod ball head, panoramic head and clamp directly; more practical than lens collars without dovetail groove. 2. The net weight of the tripod mount ring is about 155g, carved into an irregular shape, the smallest diameter is about 76mm, the contact surface with the lens is made of 3M plastic film, the widest is about 18mm, and locked by the large non-slip knob. 1. The lens collar is tailor-made and compatible with Tamron 18-400mm f/3.5-6.3 Di II VC HLD B028 Lens (for EF Mount, F Mount), can't be used for other lenses; reserved window for the LOCK switch on the lens, other switches are blocked; the lens collar is fixed by the switch and cannot be rotated.

Tripod Head Type: Ball Heads. Material: Aluminum. Compatible Devices: Camera. Color: Black. Brand: OYANIA. Manufacturer: OYANIA. Date First Available: December 6, 2022. Best Sellers Rank: #86 in Tripod Lens Mount Rings. Item model number: PH05-IS-TA1840. : B0BP6LBCMT. Item Weight: 8.1 ounces. Package Dimensions: 5.94 x 4.25 x 3.58 inches.