Pentax's full-frame K-1 Mark II has a ridiculous ISO range
 

Pentax has unveiled the 36.4-megapixel K-1 Mark II DSLR, the successor to its first full-frame, the K-1. The new model hasn't changed much, apart from one outstanding new feature. Thanks to a new "accelerator unit" for its Prime IV image processor, t...

https://www.engadget.com/2018/02/23/...i-dslr-camera/