Originally posted by monochrome I'm quite certain Ricoh would welcome your engineering expretise as part of their video develoment team.
Though I wouldn't mind working at Pentax, I'd be asking actual professional videographers and cinematographers for feedback... which is what they should have done in the first place.
The workaround is simple: Attach a bloody external microphone! People do that all the time if they want to use their DSLR for video, because the built in microphone just isn't good (and I have the feeling that the weather sealing on my K-5 means it is even worse than that of competitors). Once you do attach an external microphone, which people who care about audio tend to do, the noise the SR system makes goes away, it won't be picked up. That's why Pentax provides a microphone jack.
A minor audio quality issue (noise thanks to SR) leads to a big image quality issue (image quality getting f***ed up by the electronic SR) and at least the removal of a really useful feature. They should just ignore the noise, warn us about it, and give the option to record video with mechanical SR... it's that simple.
As for MJPEG... I have the impression they have left it away because it SOUNDS outdated... they were a bit belittled for only providing MJPEG when everyone else was doing h264 in one way or another. That the actual MJPEG quality was much better than h264 doesn't matter... The inclusion of h264 is understandable and desireable, but the removal of the MJPEG option isn't. It's as if they had left away the option of saving raw files for stills, because raws take up more space. Yes, they do, but the quality of them is better.
The K-3 suffers from a bit of a split personality. It wants to be taken serious for video with the inclusion of a headphone jack and manual gain control (both very good features that bring the camera ahead of some competitors), but then doesn't give options that would be useful to people too, and that had been there before.