Summary: Bearing all that the K-5 II does minus an optical low-pass filter, the K-5 IIS is a specialized camera made for those who want a little more detail and know how to handle the resulting artifacts. Its weatherproof design and small, tight build make it ideal for landscape photographers, as well as anyone who spends a lot of time outdoors.
Pros: Good detail and dynamic range (even better in Raw), Very low shadow noise in Raw files at low ISOs, One of the best APS-C DSLRs in terms of high ISO image quality, Very good build quality and handling, Maximum ISO of 51,200 at full resolution, Excellent burst depth in Raw mode (with firmware 1.0.1), 1080p HD video mode with basic editing built-in, In-camera Raw processing, Built-in sensor-shift shake reduction effectively stabilizes all mountable lenses, Useful electr...
Cons: No dedicated movie shooting button (important only if you plan to use the movie mode often), No AF during movie shooting, Poorly implemented live histogram in live view/manual exposure mode (doesn't indicate final exposure), No 'live' aperture control during movie shooting, Shadow Correction mode doesn't take full advantage of K-5's sensor, Jaggies and color error can be a problem along very fine diagonal lines (more so with the K-5 IIS), Noise processing in Raw at IS...
Excerpt: The addition of an improved LCD screen and faster processor gives the Pentax K-5 II a big edge over its previous professional DSLR model camera . The continuous shooting at 7 FPS is impressive, and the camera has a strong shake reduction feature. However, we weren’t impressed with the shutter speed or battery life, so if you want something for the long term, you may want to look elsewhere.
Pros: The design of this DSLR camera will withstand the elements, and the screen helps reduce glare in harsh lighting.
Summary: The Pentax K-5 II follows its predecessor by two years with an almost identical specification which hides the most sensitive autofocus system yet. The new SAFOX X AF system is sensitive down to -3 EV which is beyond any available digital camera. The simultaneously-launched K-5 IIs Pentax K-5 IIs which lacks an anti-alias filter is the only DSLR to top the image quality of the original K-5 Pentax K-5 . The K-5 II lands right between them.
Pros: Excellent control over image noise, Very good image sharpness, Superb dynamic-range, Natural image colors, Generally fast and responsive, Good focusing accuracy, Effective stabilization for all lenses, Unique, Unique, Innovative exposure control, Extremely flexible image parameters, Digital white balance preview, Post-shot RAW recovery, In-camera RAW conversion, Top-of-class weather resistance, Great LCD visibility
Cons: Noticeable image review delay, Slow in-camera corrections, Pitch not shown in OVF, Poor, OVF and, LCD too left, Status screen does not turn off automatically, Camera strap gets in way of mode-dial