Originally posted by TiminyCricket How did you manage to keep the shutter depressed for so long? Did you use a remote cable release and a piece of tape wrapped around it to keep the button depressed?
From the previous post, you might get the impression, that the difference is being made by the use of a IR remote, while it's actually a software function of the newer Pentax camera models.
With the K10D, you have to keep your finger on the button to hold it down. The K20D and later models offer the function to press once for starting exposure, pressing again for stopping it.
That being said, it may be that the mentioned IR remotes bring that functionality to the K10D, i don't know (mine doesn't; but it can also act as a cable remote, then it does, but drains its battery relatively quickly). You don't need to buy a IR remote to have that functionality on the K5 which is being used by the TO.