Summary: The Pentax Q is a really nice camera. Nice to look at, beautiful to use. Ergonomics is not the slightest regret a bulky SLR and think. The only real drawback is related to the design choice to use a sensor of small size, typical of compact cameras. So there is a loss of detail at high sensitivity and is difficult to get one out of focus, unless taking macro. It then turns to those who love the so-called bridge but want to be able to interchange lenses.
Pros: Design, Ergonomics, Flash, which is positioned to avoid red eyes., Ability to save RAW after shooting JPG.
Cons: Autofocus is not fast, Detail lost at high sensitivity, Difficulty of obtaining one focus of the sensors typical of reduced dimensions, The absence of a viewfinder.
Summary: 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.
Pros: Compact and durable magnesium-alloy body, Handy Quick Control Dial mounted on the front, Captures nice 12-megapixel photos, Great ISO performance up to ISO 1600, Bright 3.0-inch LCD screen, Cool in-camera options, Versatile interchangeable lens system, Plenty of manual control, Host of creative options, Extending flash cuts down considerably on red-eye, Hot shoe for optional flash units, Full 1080p video with stereo sound
Cons: ISO 3200 and above show a great deal of noise, Poor battery life, Shooting performance is more in line with point-n-shoots rather than EVIL (aka MILC) cameras, Slow buffer write speeds, causes camera to lock up after only a few shots; even in JPEG image mode, HDR mode doesn't give you the dramatic effects you see from heavily processed HDR images that are created manually, Smart Auto mode seems to have some white balance issues, producing warmer than natural photos wi...
Summary: The big brother to the X10 is the X100 , which was released about a year earlier and got a lot of positive press. The X100 has an APS-C sized sensor, a fixed 23 mm lens, and a $1,200 price tag.
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.
Summary: The Pentax Q is qute and definitely has the wow factor - it literally yells "buy me" when you first see it! The Q is a compact, capable and easy-to-use little camera. Its interchangeable lenses cover a good part of the most used range, from a fish-eye to a 100mm (equivalent) short telephoto lens. It is beautifully crafted, a real nice piece of industrial design made from quality materials. The key question, though, is the image quality satisfactory?
Summary: At £600 with the 8.5mm (47mm equivalent) f/1.9 prime lens, the Pentax Q certainly isn’t cheap. No doubt that a huge amount of R&D and development costs will have gone into the system, but perhaps not enough of the former to realise that an accessible price-point would have gone a long way in helping the Q’s prospects in a wider market.
Pros: Small design, sharp & low noise images at ISO 125-400 settings, long lenses small in size, faster flash sync due to leaf shutter lenses (limited to 1/250th sec with external flash however)
Cons: Poor LCD screen, small sensor size means lack of shallow depth of field control, BC (Bokeh Control) mode is flawed and poor, function dial placed awkwardly by lens, not possible to fit an EVF, slow Raw shooting due to small buffer, expensive
Summary: The main downside to the Pentax Q is the price. At $800, street, with the Standard 1 lens, it’s far more expensive than most comparable standard compacts such as the Canon S95 ($340, street), and pricier than even some large-sensor ILCs, such as the Olympus Pen E-PL3 ($680, street, with 14–42mm f/3.5–5.6 lens).