For Canon RF 600mm F11 IS STM & RF 800mm F11 IS STM. Canon RF 800mm F11 IS STM. Canon RF 600mm F11 IS STM. The lens collar stand foot bottom is added 45mm 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 QR-Plate; also reserved 1/4" and 3/8" screw holes and stainless-steel anti-slip screw for fixing lens to tripod directly;.
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