Originally posted by que es tu I got my KP in 2020, so it probably isn’t the latest version. I will have to look into it. I have been busy lately and haven’t used DCU, just jpeg and then transferring files with any minor tweaks on my computer at work (but don’t tell my boss!!)
The latest version (v5.9.4) is available here
Software Downloads : Support & Service | RICOH IMAGING
The easiest way to install it is as an update to the program from the CD that came with your camera, but there's a relatively simple "workaround" if you haven't installed the program and/or the CD isn't "immediately available".
The latest version is somewhat more "user friendly" as well as having more options.
There are also some "undocumented" features discussed here
https://pentaxofficial.com/tsukaitaose/3469/ (in Japanese, you'll probably need a translator) and onwards through the links at the bottom of the page.
They really get quite enthusiastic about the program and apologise for the lack of documentation!