Wed Dec 18, 2019 5:03 am
I owned both, and eventually sold the UM46K and now shoot with two fully kitted Pockets 4K.
Is the Ursa Mini 4.6K a better camera? Mostly, yes, but it depends, and that's almost always the correct answer. As a documentary filmmaker, the UM46K's higher dynamic range and overall image texture (not sure how else to describe it) makes it an ideal camera for me and, for a few years, it was. Except when I was shooting in low light, which began to happen a lot, in which cases the UM46K stayed in the pelican and the pocket came to the rescue.
For me, the BMPCC4Ks offer much more versatility-- I can use them in a minimal set up for situations that call for that, or build them up to full cinema kits. These days, one is nearly permanently attached to my Steadicam in a light configuration for flying all day (powered via a single V-mount battery on the sled). The other camera is on monopod or tripod sporting a heavy zoom lens for details. More importantly, the dual ISO has afforded me the possibility of shooting in situations where it would have been impossible with the UM46K.
Do I still miss the image from the Ursa Mini? Of course. Just yesterday, I was grading a project I started with the Ursa Mini and finished mostly with the pockets, and there is something really special about the UM. Except, of course, when I'm battling FPN because I'm filming a concert and I have very little control over the stage lighting.
So, again, it depends, and that's the beauty of this discipline-- it's different for everyone.
Another thing to contemplate is Blackmagic Raw-- if you're interested in moving on to more modern and robust workflows and you can't simply add a pocket 4K to your existing kit, alongside the UM, then the BMPCC4K is a fantastic way to enter the world of Braw.
Here's hoping BMD can release an Ursa Mini with dual ISO in 2020 (I could care less whether it's 4.6, or 6 or 8K). That would really dismantle most of the arguments I made above and make it a better choice over the pocket (except for weight and price).
Fabián Aguirre
Cinematographer / Steadicam Operator
www.theunderstory.co