Reading this thread makes my brain hurt.
To the OP:- Are you sure you are able to review the images in camera? If so, the files (2 per exposure if you are shooting RAW+) are saved to one or both cards depending on settings.
- How many cards are in the camera? Be sure you are looking for your files on the card the camera is writing to.
- There should only be one DCIM folder on your card
- Your K-3II uses a simple file system. Within the DCIM folder will be one or more folders. The naming convention for those folders is on page 76 of the user guide. The default is based on a three digit sequential number and the date (nnn_MMDD) with the option to use the format nnnPENTX instead. If you don't see folders with either of those naming conventions, your K-3II did not write to that card.
Again...If you are able to review and navigate through your photos using the camera's review feature, the photos have been written to file and should be readable by your computer using either a USB cable from the camera (see manual for instructions)* or by using a compatible card reader.
Steve
* If using a USB cable to the camera, be sure your battery is fully charged or that the camera is attached to the optional AC power supply. The USB cable connection draws power regardless of whether you are actively reading files.
Last edited by stevebrot; 02-21-2017 at 10:44 PM.