Originally posted by blende8 Already the K20 is doing it in one go.
The K5 has additionally a 2-step version: 0/+ and 0/-.
blende,
I'm not sure what you are describing here, because the K20 already has this same feature, i.e. 2 EV steps plus or minus.
For the OP, I gave away my K10 to a relative, but the last time i looked, it had no feature to automate the whole thing to one click. I use that feature, i.e. a 2 second MLU before each step. However, if you buy yourself a cable shutter release, you can step through the manual initiation pretty quickly. Also the cable shutter release is useful in multiple image actuations to judge the exact moment to release it.
Here's an HDR tip, if you want to take more exposures with your Pentax than just 3 or 5, just use AV and a one to 2 step EV offset from the normal exposure setting and you'll get a second set which when combined with the first steps will give you more range.
good luck with the HDR,