Originally posted by sebberry You don't have to press the shutter button for each shot, but you do have to press and hold it to take all 3 (or 5) on the K10D.
As for size, I prefer the wider body on the K10D, height isn't so much an issue and that's all you get with the grip. In fact, I prefer the K10D without the grip.
Yes, you can hold down the button, but if I've got the camera on a tripod and I'm doing bracketed exposures, there is usually a 30 second exposure in there, along with the shorter ones. Holding down the button provides too much opportunity for introducing camera shake in the longer exposures. So, I used the remote to trigger each exposure. But it's a hassle to keep track of how many exposures I've made so that I don't accidentally start a new series of five by mistake (I'd often be doing this on a very cold morning and my mind was often distracted by my cold fingers). I absolutely love the the K-7 just does the right thing and shoots all five (or all three).
I also love that the K-7 (and presumably the K-5) is smarter in bulb mode. If you used the remote in bulb mode on the K10D, you'd have to keep the remote pointed at the camera and the button held down the entire time you wanted to keep the shutter open. If you let go, or your hand dropped too much, the exposure would end. I couldn't understand why they didn't design it so that one press of the remote would open the shutter and the second press would close it. Well, this too is an option on the K-7. Both of these are features they could add to the K10D with just a firmware update. Both of these are just software. It's really frustrating that they haven't provided this simple fixes for those of us with the K10D. It isn't as if it would be a complicated new interface -- just a slight behavioral change.
The RAW button on the K10D was also implemented foolishly. They fixed it for the K20D and future cameras, but again, this would be a simple firmware fix for the K10D and Pentax has never made it available. I wish there was an open source firmware for the camera, so that someone could fix it, but it'll never happen. It's no longer a big deal for me, since I have the K-7 now, but the K10D is still an excellent camera, and it's a real shame Pentax doesn't care enough about the people who purchased it to backport some of these simple, but helpful, fixes. (and yes, I do call them fixes. All of these behaviors on the K10D were foolish and poorly thought out. The changes made to future cameras show that they recognized they weren't doing it right.) Some things can't be fixed after the fact without great expense and physically replacing components -- this fixes can be applied in minutes, by just upgrading the firmware.