Excerpt: In June of 2011 PENTAX announced what they claimed was "the world's smallest / lightest interchangeable lens camera (ILC)", the PENTAX Q. Available in black or white (with the standard lens kit only available in silver), the PENTAX Q is housed in a magnesium-alloy body. The heart of this 7.1 oz camera (including memory card) is a 12.4-Megapixel, 1/2.3 inch backlit CMOS image sensor, which is protected by their proven DRII (Dust Removal II) mechanism.
Excerpt: With the demise of the Pentax X70 and X90 cameras, Pentax no longer offers a camera with a non-interchangeable zoom lens and a view finder. We will therefore take a look af the recently introduced Fujifilm X10 which would fill the gap between the Pentax viewfinder-less point-and-shoot cameras and the Pentax DSLRs.
Conclusion: At the moment, it's just too expensive compared to high-end compact cameras, and the performance isn't quite there when likened to similarly-priced compact system cameras such as the such as the Nikon 1 J1Olympus PEN Mini E-PM1 and the Sony NEX-C3
Excerpt: The Pentax Q is the first Interchangeable Lens Camera (ILC) from Pentax and the smallest camera of its kind (as of Oct. 2011). The Q uses the new back-lit sensor technology which promises to produce an image quality comparable to a much larger traditional sensor. In this review we shall examine that claim by comparing the Q to an Olympus four thirds camera, the Olympus PEN Lite E-PL3 .
Conclusion: The Pentax Q is the most compact interchangeable lens camera you can buy. But a small sensor that limits fine detail in images, slow start up and processing performance, and a high sticker price hold this small shooter back.
Pros: Sharp images. Excellent video quality. Good low light performance. Built-in flash. Silent operation.
Cons: Very expensive. Slow to start up and process images. Photos lack depth. Included lens doesn’t zoom.
Conclusion: When Pentax announced the tiny Pentax Q compact system camera in the middle of last year, it instantly polarized opinions. Some loved it for its truly compact proportions, fulfilling a promise that they felt other mirrorless cameras had failed to truly deliver upon. Others decried its much smaller-than-typical image sensor, and the constraints this would bring in terms of image quality, especially in the areas of high ISO noise and shallow depth-of-field effects.
Pros: Compact body is in a class of its own compared to other mirrorless cameras, Great build quality and good ergonomics considering the size, Shoots like a real camera, not a gadget, High Performance-series optics match the camera's build quality, Sensor-shift shake reduction, Good dynamic range for such a small sensor, Fairly good continuous burst speed in JPEG mode, Bright, vibrant color and fairly good exposure yield pleasing shots in good light, High detail possible i...
Cons: Lens selection is very limited so far, Unique-series lenses are very limited in terms of capability, Shallow depth-of-field is hard to achieve, Blur Control function is hit and miss, Need to use large apertures for maximum sharpness; diffraction-limiting sets in above f/2.8, 8.5mm kit lens has some soft corners, High ISO performance lags other compact system cameras (but does well against most fixed-lens cameras), Pictures tend to be quite soft except in ideal conditi...
Summary: The Pentax Q already has divided opinion and is likely to continue to do so. It's a true mix of genius and insanity blended into one product that, therefore, makes it underwhelming. The Q's small sensor does mean lack of shallow depth of field control and despite Pentax's BC mode (pseudo bokeh background effect) making its way into the camera it just doesn't work.