Sony FX 6 Quick Start Manual page 160

Viewfinder: Attaching the Loupe
The Sony bracket is too weak to support the loupe so first attach the
more sturdy Vocas bracket. Do not attach the loupe to the VF without
attaching the Vocas bracket first. The Vocas bracket allows the VF and
loupe to be tilted but the VF will not have the same range of vertical
positions.
The loupe can be easily removed while shooting once the bracket is in
place.
The camera does not fit into the camera bag with the Vocas bracket
attached. Remove it once you have finished shooting.
The process is explained step by step on the following pages.