Here is the elusive (and imposing) Nikkor ED 800mm f/8, combined with the focusing "adapter" AU-1, on my beefy Sachtler ENG 2 CF HD tripod. The total makes for a less than compact package
ordinarily I would mount the lens directly to the fluid head using a Sachtler video plate, however the outline of the 800 makes the fit very tight so difficult to remove the lens without splitting the assembly. Thus an all-metal sandwich to give Arca mount is provided.
This 800 ED Nikkor is among the sharpest long lenses I have ever used.