Pentax on Thursday brought out an upgrade to its least expensive DSLR. The K-r directly tackles some of the issues with the earlier K-x and focuses on image performance first: it now shoots at up to ISO 25,600 (up from 12,800) and at up to 6FPS for 25 shots in continuous mode (up from 4.7). High dynamic range shooting is better with a new night-focused mode, and the shutter speed has climbed to 1/6000th of a second.
