Excerpt: Have been owning the K-3 for less than a month yet, but already shot 600+ images with it, if that is any indication of the fun I've had with it. Coming from a K-7, which I used through nearly five years and 9,800+ actuations, I have been pleasantly surprised by the seamless transition to the new model, which by now almost feels as if I had never shot anything else.
Excerpt: I bought the K-3 as soon as it was available in the US. I don't like being a first adapter, but the K-3 has performed flawlessly since I bought it 8-9 months ago. The K-3 is the third Pentax body I have owned. I picked up a K-7 several years back and then upgraded to the K-5. I skipped the K-5II/IIs. The Pentax K-7 was the replacement for my Olympus E-3, but I have always shot multiple systems and the majority of my career has been with Canon.
Excerpt: Superfast series pics. Fast AF, much faster than the K5. Great tracking in low light. High ISOs seem to have a little more noise than I'd like (but I haven't confirmed this). Handling slightly different to the K5; don't particularly like the "press and then rotate to change AF type" switching, do like the dedicated video button. Twin SD cards is great; RAW file sizes have essentially doubled according to the camera.
Pros: Fast / Accurate Auto-Focus, Fast Shutter Speed, Good Image Quality, Good Image Stabilization, Quiet
Excerpt: Loving it! Comparing to my K7, Resolution is has nicely jumped a lot. I can really crop in now. Lower light performance and focusing is considerably better. Autofocus even better. Furthermore, I like that it can automatically save a 1920p JPEG to one card for a quick upload to Flickr, while saving just DNGs to the main card to work with. That way no extra versions of jpegs filling up my directories; I just upload what I want and wipe the rest.
Excerpt: I'm going to start by saying I'm a RAW shooter, and that I haven't really tried out the jpeg settings too much. And that the K-3 is far from the first camera system I've bought into. I actually traded a fair amount of medium format film equipment towards this camera, and I have to say I've never been more satisfied bringing a single body to such a variety of jobs and in so many sometimes trying weather conditions.
Pros: Easy To Use, Fast / Accurate Auto-Focus, Fast Shutter Speed, Good Image Quality, Good Image Stabilization, High ISO Performance, Quiet