Quick Summary
This is a tripod mount ring lens collar for the Tamron 50-400mm f/4.5-6.3 Di III VXD A067. It is described as a redesigned and improved collar body with an Arca fit quick release plate at the base, plus 1/4" and 3/8" screw holes for direct tripod mounting.
The collar is stated to be for this specific lens and not for other lenses. If you are choosing between offers, the main checks are exact lens compatibility, the mounting standard at the base and whether the included fixing points match the support you plan to use.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Tripod mount ring lens collar and support holder bracket. |
| Compatible lens | Tamron 50-400mm f/4.5-6.3 Di III VXD A067. The collar is stated as specific to this lens. |
| Base fitting | Arca fit quick release plate with a 70 mm long plate section. Check that your head or clamp accepts this style of fit. |
| Tripod screw holes | 1/4" and 3/8" screw holes are reserved for direct fixing to a tripod support. |
| Locking feature | 180° quick-lock knob is stated for locking and releasing the collar. |
| Clamp compatibility | Compatible with Arca-Swiss 39 mm fit tripod ball head, panoramic head and clamp directly. |
| Additional mounting option | Can be combined with clamp mount converter IS-3950PRO, sold separately, for use with hydraulic heads with Manfrotto structure. |
What to Compare Before Buying
- Lens model: This collar is made for the Tamron 50-400mm f/4.5-6.3 Di III VXD A067. Check the exact lens model before choosing an offer.
- Base fit: The bottom uses an Arca fit quick release plate. Compare that with the head or clamp you already own.
- Direct fixing points: 1/4" and 3/8" screw holes are provided for tripod mounting. Make sure your support uses one of these sizes if you plan to fix it directly.
- Extra adapter use: The IS-3950PRO clamp mount converter is sold separately. Only consider that route if you already plan to use that accessory.
Compatibility, Size and Fit
Compatibility is the main decision point here. The collar is stated for the Tamron 50-400mm f/4.5-6.3 Di III VXD A067 and is not intended for other lenses. The base is described as Arca fit and also as compatible with Arca-Swiss 39 mm fit ball heads, panoramic heads and clamps directly. If your support system uses a different standard, check the fit carefully before choosing.
What Else You May Need
If you want to mount the collar through a hydraulic head with Manfrotto structure, the clamp mount converter IS-3950PRO is stated as a separate item. Otherwise, confirm that your tripod head, clamp or direct fixing point matches the collar’s mounting style.
Before You Decide
Confirm the exact lens model, the Arca fit base and the screw size or clamp style you plan to use. If you need the Manfrotto-structure route, allow for the separate IS-3950PRO converter.
