Pentax K-5 Digital Camera

With a brand-new 16-megapixel sensor, seven frames per second burst rate, and an unusually wide expanded ISO sensitivity range of 80 to 51,200 equivalents, the Pentax K-5 takes over the flagship position in Pentax's APS-C digital SLR lineup, replacing last year's K-7 model. (Technically, the Pentax K-5 is the company's flagship digital camera in most markets, period, since the attention-grabbing medium format Pentax 645D model has very limited distribution outside of the Japanese market.)
While its nearly identical to its predecessor externally, the Pentax K-5 sports a number of under-the-skin improvements beyond those enabled by its updated CMOS image sensor, some of them seen previously in the recently-announced mid-range Pentax K-r DSLR.
The Pentax K-5 includes the latest generation of Pentax's SAFOX phase-detection autofocus module, which debuted in the 645D. The 11-point SAFOX IX+ module combines features of the SAFOX VIII+ module from the K-7, and the SAFOX IX module from the K-r. It should yield improved low-light focusing, as well as more accurate and stable AF overall.
The Pentax K-5 also inherits the dual-axis level gauge function from the 645D, giving an indication of both tilt and roll, where the K-7 offered only a single-axis roll gauge. Coupled with the sensor shift stabilization system from the K-7, which can correct for rotation around the lens barrel axis, the Pentax K-5 can also automatically correct for slightly tilted horizons at capture time.
Pentax has updated its high dynamic range mode in the K-5, enabling handheld HDR shooting, and providing a greater degree of control over the look of the HDR effect that can be achieved in-camera. Other creative additions include the latest Custom Image and Filter effects from the K-r, such as an overhauled Cross Process function, Bleach Bypass effect, and more.
Also updated is the Pentax K-5's movie recording function, which now captures videos at up to Full HD (1080p) resolution, and the K-5 still includes both an external stereo microphone jack, plus the ability to control the aperture used for video recording. For creative types, the Pentax K-5 now allows use of some of its filter effect functions during movie recording.
The Pentax K-5 uses SD and SDHC memory cards for storage, and a firmware update due shortly after the cameras ship will enable compatibility with SDXC cards as well. All accessories compatible with the K-7, including Pentax's battery / portrait grip, tethered and infrared remotes, and lithium ion battery pack, will also work in the Pentax K-5, making it rather easier for current K-7 owners to justify upgrading to the newer model.