Pentax's full-frame K-1 Mark II has a ridiculous ISO range
Original K-1 owners can get the ISO 819,200 upgrade for $550.
Pentax
The best DSLR for beginners
Nikon wins, with runner-ups from Canon and Pentax.
Pentax's new KP DSLR shoots in incredibly low light
It has an, er, interesting new compact design and five-axis stabilization.
8The Pentax K-1 is its first full-frame DSLR
At $1,799 it undercuts rivals, but there are only two new lenses for it.
