https://www.engadget.com/2017/01/26/...bly-low-light/

Pentax has released the KP, weatherproof, compact DSLR with five-axis body stabilization, extreme low-light-sensitivity and a pretty off-beat design. The standout feature is a ridiculously high 819,000 ISO, a setting that would let you shoot with almost no light. That puts it ahead of every other camera, except perhaps Sony's Alpha A7II S. In fact, the Pentax KP, like most other cameras nowadays, likely uses a new Sony sensor -- so don't be surprised to see other new APS-C models with that kind of capability soon.

The Pentax KP is also the Ricoh-owned company's first APS-C camera with five-axis body stabilization (borrowed from the full-frame K-1) bringing it up to par with Sony, Fujifilm and other rivals. As with other Pentax models, it uses "pixel shift resolution," giving you more resolution and color accuracy as long as your subject doesn't move around much.

Other features include a 3-inch, vertical-tilt screen, AA-filter-free design, a removable and replaceable grip via an Allen key and customizable buttons. The new body is dustproof and weather resistant, with a very compact design that's smaller and lighter than the K-3. Apparently some weight was sacrificed for the battery, though, as it can only do 390 shots compared to 560 for the K-3.