Summary: This product is in the process of being discontinued by Pentax after one short year. It really flopped. Be sure that you have firmware v1.03 installed. You can get this from the Pentax website. The earlier firmware versions had some focusing problems but these problems mostly disappeared when I installed v1.03 firmware. The other big problem was the lack of a viewfinder. The camera depends on the LCD screen which is close to unworkable in sunlight.
Summary: Love the picture quality, however you need to buy additional lens for better zoom. Not a listed requirement in the description. It does state that additional lens are available not required. Lens protector should also be attached (via cord). At events it is easy to lose.
Summary: Positives: Good IQ. Neat design. More compact than a DSLR. Live view opens up new shooting opportunities and perspective. pancake lens makes the camera less obtrusive and allows for easier street and event photography. The in-camera color settings are amazing and reduce a lot of post-processing work for RAW images.
Summary: Bought this camera for my Dad. What surprise me is that it does not support Asian language manual, not in Chinese. Oh come on Pentax, If Chinese language is not included, why would you advertise "Japanese, Chinese language" in your (English version) advertisement? The 40mm lens are solid, and the focus ring feels smooth. Time to focus is better than my K10D in low light, but simetimes it can not focus. Picture quality is fine for Monitor display at ISO3200.
Excerpt: I purchased and tested the K-01 along with two standard zooms, the Sigma and Tamron 17-50 f2.8's. I eventually returned the camera and lenses, because it was just too big for a mirrorless, no viewfinder, camera. To me, the K-01 sits in a no-camera-land between DSLRs and Mirrorless ILCs, being VERY close in size to the DSLR as a body and especially when using full size K mount lenses, but without the essential view finder to enabling optimal handling with full size...
Summary: I bought this (fortunately at a good price as a daily deal) thinking I could dust off my old lenses with the Pentax K mount. I did, and they work (of sorts), but I quickly concluded that such heavy lenses belonged to a previous era. The bundled 18-55mm lens is good but limited in its zoom range so I invested in the Tamron 18-200mm lens. The rechargeable battery is quite big, but it does keep the camera running for a long time.