I e-mailed Pentax USA (Colorado) about 3 weeks ago (response and initial inquiry):
Thank you for contacting Pentax.
for studio strobes....DorianB81 (12:22:30 PM): u need a pc connector...DorianB81 (12:22:39 PM): and for a pc connector u need a hot shoe adapter 2p...
For studio strobes you need a PC Connector and for a PC connector you need a hot shoe adapter 2p.
The hot shoe adapter 2p allows the k10D to have a PC Adapter.
If you are in need of further assistance, please respond to this email or call our technical support center at 800-877-0155.
Sincerely,
Robert Bradley
Pentax Imaging Technical Support
Your Email:
Have K10D(plural-as in 3units) and 'pc' cable based studioflash. Need camera safe connection details-what hotshoe to pc plug
device? I realize this will be a manual mode situation (not PTTL)-I'm concerned about safety of camera!
I have tried Wein safe-sync---does NOT work; NO flash!
Then I went to B&H:
P2
Got it ten days latter, even though it's not regularly stocked--
works fine.
A step up would be:
PW-II. No wires, a long time headache with their intermittent breaks, shorts and notorious tendency to fall out of socket. Putting a pair on order Monday.