Apparently, we have moved on from whether the ftz and ftz2 have a motor, inbuilt, to control the diaphragm actuator.
Thank goodness.
That was an easy one, it’s a fact that the motor exists.
I am not an electrical engineer, so I won’t touch any of those statements.

FTR: I get better quality images from my trinity f mount glass, as an example, when used on my Z9, than on my D850.
It is a better sensor, and… it adds IBIS, to the mix.
If there is a slow down, caused by the adapter, I have never encountered it.
I shot 10fps last week with the 70-200 FL-E f2.8 lens, using the ftz2, mounted on the Z9. And I could not have been any happier with the images.

So, while you guys keep arguing,
I have two events to shoot tonight.
Which is all that matters!!

FYI, I spent a dozen years at Tektronix as a Field Engineer measuring sub nanosecond rise time signals. We built the world’s fastest digitizer used to acquire the EMP from nuclear blasts and sampling scopes digitizing rise times in the tens of picoseconds for the development of Fibre optic cables by Corning Glass and GHz connectors by Amp, all of which were my customers. I’ve been an amateur radio operator (extra class at present) since the 50s and held an FCC first class license and taught electronics and computer repair in the military. I do amateur satellite work at HF, VHF, UHF and GHz frequencies and design my own amplifiers and antennas. I’ve also designed and built audiophile class audio amplifiers on a professional basis. If you doubt what I’m saying, I’m attaching an image of my 144 MHz, HF and audio amps which I designed and built to demonstrate to you that I don’t think there’s much you have to teach me about fast signals, transmission lines, picosecond edges or GHz RF.

Sorry to hijack this thread temporarily to demonstrate that I walk what I talk.

Cheers,
K4CKB

FYI, I spent a dozen years at Tektronix as a Field Engineer measuring sub nanosecond rise time signals. We built the world’s fastest digitizer used to acquire the EMP from nuclear blasts and sampling scopes digitizing rise times in the tens of picoseconds for the development of Fibre optic cables by Corning Glass and GHz connectors by Amp, all of which were my customers. I’ve been an amateur radio operator (extra class at present) since the 50s and held an FCC first class license and taught electronics and computer repair in the military. I do amateur satellite work at HF, VHF, UHF and GHz frequencies and design my own amplifiers and antennas. I’ve also designed and built audiophile class audio amplifiers on a professional basis. If you doubt what I’m saying, I’m attaching an image of my 144 MHz, HF and audio amps which I designed and built to demonstrate to you that I don’t think there’s much you have to teach me about fast signals, transmission lines, picosecond edges or GHz RF.

Sorry to hijack this thread temporarily to demonstrate that I walk what I talk.

Cheers,
K4CKB