Originally posted by johnmflores The K-3 may or may not be good for video. We'll have to wait for some video-oriented tests. But if you choose the K-3, you can be certain of one thing - you will likely be alone among your peers and struggle to find support communities and accessory makers to help you get the most out of the camera. Canon (and Panasonic to a lesser degree) dominate the space at the moment, and others like Blackmagic are introducing interesting alternatives. For someone on a budget I usually recommend the Panasonic GH2, since it open up lots of opportunities for cheap, high quality, manual focus primes.
I'm not saying that the K-3 is a bad choice, it's just that you should be aware of the larger implications of your decision and be ok with them.
I don't see what you mean. Pretty much all accessories are brand neutral, mounting on the hotshoe or the tripod screw. As long as the actual video formats the K3 can do are a vast improvement over previous generations, the K3 should be perfectly fine for most video purposes. It has mic and headphone ports, so Ricoh seem to be taking it a bit more seriously, at least. With a third party mic and the plethora of lenses available to us, slap it on a rail or shoulder rig or whatever you want to do with it (which just use the tripod screw, thus brand neutral) it all comes down to the formats, and ultimate quality of video the K3 can capture more than anything else.
Of course, things like autofocus, focus peeking in video mode, and features like that may make a difference, but on paper, the K3 should be quite capable for general purpose video.