The Pentax K7 does not support tethering – huh?
The Pentax K7 is currently the top-of-the-line model D-SLR primary aimed at the semi-pro market and I was seriously considering getting one. It has some very nice features, unfortunately tethering is not one of them.
http://www.pentaxforums.com/forums/pentax-dslr-discussion/65721-k7-tethering.html
http://www.pentaxforums.com/forums/pentax-dslr-discussion/98650-rant-lack-tethering-k7.html
http://www.pentaxforums.com/forums/general-photography/80344-tethered-shooting-pentax.html
There are some comments about this being available in a future firmware upgrade, but I am currently looking at buying a K20D instead as waiting and hoping for an update that may not ever happen sounds way to risky to me.