Originally posted by reh321 In the days of film, no one would think of attempting to take movies with a 35mm camera. Although the media can be the same today, the needs are vastly different. You are much better off getting a camcorder, a camera optimized to take video, to take video. Anything made by Pentax will be optimized for still shots, and video will be a compromise within that structure at best.
I agree, none of the dslr/mirrorless cameras are optimized for video, they all have the wrong form factor. Unfortunately, proper video cameras cost a lot more, 3,000USD at the minimum, easily 10,000USD for more fully featured options (and they are still referred to as budget!) So for those of us who don't have that much money, we're left hunting for the best video quality despite the compromises.
Personally I'm not invested in 4k, but good quality matters. Such as 4:2:2 10bit internally recorded video. We're all used to the flexibility of raw images but video is often too compressed to offer sufficient latitude to color correct and grade.
I've ended up using a GH3 with my pentax lenses adapted, hoping to upgrade to a GH5 further down the road. Unfortunately, yes, it's a basket of compromises. The K-new is likely not going to match that, but fuji managed to go from poor to fantastic video quality, so here's hoping to the possibility of fewer compromises and better compatability