Originally posted by NoCo Pentaxian [...] Note, however, that even the jpg files come in big and can fill a phone pretty quick.
Good luck!
If it's just for Instagram, it's enough to process the image in camera and save it as JPEG M, one or two stars compression (out of three). It's more than enough for the Instagram filters and basic edits, and it transfers in 5 seconds max (from the camera to the phone, thru WiFi).
Used it to process a raw file (DNG format) on the phone, using Lightroom and Snapseed (both of them able to process the DNGs). I thought that the transfer has stalled, it took more than a minute to transfer a 29MB file; pretty disappointing, considering that the phone can download (thru WiFi, but also thru 4G) at least 8-10MB/s (about 100Mbps top speed). Pretty disappointing for the Pentax WiFi implementation, but (again) it helps if you resize the original file in camera.