Sony ZS-1000 vs Sony Z7U with Canon B4 ENG lens - Zoom Range Tests

A couple camera zoom range tests. Pitting my Sony ZS1000 against the Sony Z7U with a passive B4 adapter ring, and the ability of the Z7U to power and control the iris of a B4 lens.
I wanted to see how the ENG lens compared to the built-in lens of the ZS1000, and also how the zoom range compared- with the crop factor of the smaller sensor on the Z7U than a 2/3" ENG camcorder, plus the 15x optical zoom, plus the 2x doubler, plus the digital extender that's available in each camera.
One thing is clear, with the zoom reach of the Z7U coupled to an ENG lens, I'm going to need a better tripod head to manage such minute adjustments that make for big movements with a lens this long.

[@soundoffaithministries]

Curious to see how this Canon lens would work on the JVC GY-LS300 whether or not the same feature will work, except for the digital extender?

[@IEBATechThoughts]

Should work just fine, except the LS-300 does not power or control the iris of the lens like the Sony Z7 which is designed with a B4 Lens jack to do just that.