I have recorded with Blackmagic pocket, BMCC and pocket 4k more than 120 weddings in the last 6 years that I am always recording with BM, in this moment I not have another Brand.
https://www.youtube.com/LOVESTORYES/videosBlackmagic pocket 6k pro Is the same that in the past the BMCC was an exceptional camera but the 4K Production was a low light fiasco
This is the same, the Blackmagic pocket 4k is very good, despite micro 4/3. For us the Blackmagic 6k pro is a fiasco, it is cumbersome, heavy and, above all, the battery system we work with is unusable. BRAW only for 6k and 4k. I still work mostly in HD or my delivered product is in HD.
Although I love the nd filters and the screen, I think that in a 4k with an ef mount it would be ideal if the consumption is kept at 20W
I have processed the return of the camera 6k pro, it is not a wedding camera for us.
I have 3 Blackmagic pocket 4k in production in this moment I am more confortable.