Denny, agreed that PL mount makes one feel more professional.
But the counter point is, you have far more options with EF glasses. If EF mount in camera is made into a lock mount (the way it is done in Red cameras and in Canon C700 and C300-II) I see no reason why EF lenses can't be used in professional circumstances.
The point is, EF is is fast becoming a popular mount in professional work, as much as PL. Look at Arri, who created the PL mount for their cameras. Even Arri doesn't think that PL is sacrosanct. Alexa mini and Amira can be bought with EF mounts. And the mounts have locks. Here is the Adorama link to the EF mount for Arri cameras.
https://www.abelcine.com/buy/lenses-acc ... lens-mountI use a Red Scarlet-W. I have two mounts -- the lockable EF and the PL mount. All my lenses are EF mount. I have two sets of glasses -- Zeiss Cp.3 15, 25, 35, 50 and 85 and Zeiss Contax Cine modded 25, 35, 50, 85 and 135. I use the glasses depending on the look that I want to attain. Another lens I have and use very often is Tokina 11-16 cine.
The only time I use the PL mount on my camera is when I need to attach a huge Zoom lens on my camera like Alura or Optimo, which I hire.
I am planning to do away with that too in future if I can afford to buy the Zeiss 70-200 and Zeiss 28-80. These lenses are available in EF mounts (or with PL).
All the major lens manufacturers these days give you the option of buying their cine lenses with EF or PL option. They include Zeiss, Cooke, Angeniux, Celeris, Sigma and Schneider. So, obviously EF is fast becoming an option for professionals. People who love to shoot with vintage lenses prefer EF as Leica-Rs and Zeiss Contax glasses can be easily modded to EF.
So EF has become the choice for many. The problem remains when the mount on the camera cannot be locked. That has been solved by Red, Arri and Canon in a few models.
We would be waiting for BMD or third party manufacturers to do the same for Ursa Mini Pro cameras.
FILMWALLAH.
DR Studio. Mac M1 Studio Ultra 64 GB Ram, T7 for Resolve Cache
UMP G2, BMD Pocket 6K, Canon R5 C
Zeiss CP.3 15, 25, 50, 85. Zeiss Contax 25, 35, 50, 85, 135.