Originally posted by redcat Is there any Lightroom profile (or preset) that makes the Raw file look like the output Jpeg (straight from the camera) ?
No, because the thing you load in lightroom is raw data, it is undeveloped information. Jpeg on the other hand is a finished photo, developed according to some presets. There is no need to shoot raw if all you want is the result you get from the in-camera jpeg. The second problem is that there isn't just one "jpeg" that the camera makes. There are many options: The jpeg mode (vibrant, bright, muted, film reversal, portrait..), digital filters (toy camera, etc.), lens corrections (diffraction, distortion, CA, vignetting), shadow protection and highlight protection, HDR, Noise Reduction, White balance, and so on. So even if you want to develop your raw to look like a jpeg, we don't even know which jpeg process you mean. Not to mention that these modes can be further edited by the user (Press Info, then navigate to Jpeg mode, choose one, and press Info again)
That said, I think the software that you get with the Pentax camera (a version of Silky Pix) has the same presets as the camera, so you can get very similar results, with a little more flexibility to add adjustments yourself.
If you want a different colour profile for Lightroom, try finding some online. I got one for some other Pentax cameras from RawStudio. Now I can choose a slightly different colour interpretation in the Camera Calibration/Camera profile tab. But its still not the same as jpeg. Its just.. different. Blues get darker, reds shift a little bit.. but it still needs more work with the other sliders to look like a finished photo.
You can also try to make your own. I think there is software and instructions out there. Though, I doubt a camera profile will do what you seem to want it to do. That's not its job
Edit: Also, I think there are other threads with similar questions, where you can find some profiles. Like this one (page 2):
https://www.pentaxforums.com/forums/172-pentax-k-3/267020-k-3-colours-acr-vs-dcu5.html