The Kirk LP-41 Lens Plate is designed to connect to the tripod foot of the Canon Tripod Mount Ring B, which is used with the 100mm f/2.8 USM Macro, 180mm f/3.5L Macro & MP-E 65mm f/2.8 Macro, 300mm f/4 IS, 70-200mm f/2.8 IS & 100-400 f/4.5-5.6 IS lenses. It converts the collar to make it directly compatible with Arca-type quick release clamps, without the need for additional quick release plates.
Each plate comes complete with all the necessary hardware and tools to make the conversion.
Machined from 6061T6 aluminum, and anodized to an unscratchable black satin finish
Double-dovetail design allows attachment of additional accessories to the upper or lower surface of the plate
Raised flanges at both ends assure that the plate can not twist off accidentally