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This is a bracket an stabilisation bracket to connect the Tamron SP 150-600mm F/5-6.3 DI VC USD G2 to a Canon EOS R6 camera.
Also bridges the original Canon EF to RF adapter. (I have also tested in the test to bypass the Tamron 1.4 times teleconverter, but this is very tight)
I built it to stabilize the connection between lens and camera and to relieve the bayonet.
It has an additional handle to carry the camera relaxed.
The combination is designed to protect the bayonet connection of the camera and distributes the center of gravity to the tripod thread connections.
The two thumbwheels are equipped with a matching inch screw.
The best fit for me is the
Hexagon head screw UNC 1/4" x 1/2" 20-UNC