Originally posted by CeciProAm Does this not resolve the problem;
There are two headings in the link, the first is for three Canon models that have tethering support added for Lightroom 5.3 and the second is a list of camera models that had calibration profiles added. There isn't a publicly available programming interface for Pentax cameras, even the tethering support for the 645Z that was recently made available is customized software developed specifically for Pentax. There are a couple of open-source tethering projects for Pentax cameras, but I don't believe any of them work with the K-3. The customized Flu-card is a viable option for tethering, the two drawbacks are latency in Live-View (the wireless communication is too slow for the remote display to show what the camera's back display is showing, without noticeably lagging behind) and much, much slower file transfer speeds. Those limitations are inherent with any wireless tethering system, but if you need to see what the camera's sensor is seeing to the same resolution as the back display on the camera and can't get close enough to the camera display, you should definitely consider the Flu-card. There is an in depth review here
Pentax FluCard O-FC1 Review - Introduction | PentaxForums.com Reviews Originally posted by CeciProAm Is the K3 never going to be cable adaptable?
Not likely unless Pentax commissions the development of software that lets you change camera settings via a USB cable. The SD cards use a similar interface to the USB connection, so the Prime III processor in the K-3 must have that capability. The only thing you can do right now with the USB cable is access the SD cards, but with the HDMI port you can view what is being displayed on the back of the camera, and it is possible to remotely trigger the shutter either through the IR receivers or the cable release connection (which is electric, not mechanical).