If you want full P-TTL use from that unit, you'll need adapters and cables that contain all the electrical contacts from the hotshoe. You can achieve this with 2 Pentax
Hotshoe Adapter F and the
F5P 3' extension cord. One of those adapters goes into the hotshoe, cable connects to the other adapter, and the flash goes on the hotshoe of the other adapter.
If you're going to just use the flash in manual or auto mode, you can get by with two relatively-cheap things: a
hotshoe-to-PC-sync adapter and a
PC-sync-to-hotshoe adapter. This might be too short for your bracket, but you get the idea.
If you're going to operate the flash on manual only and not require any high-speed sync, you could also go with wireless triggers. This gives you much more freedom and better range than using going wired, but you will be limited to a sync of 1/180s with cheap flash triggers. The cheapest flash triggers are those found on ebay (Cactus V2s). PocketWizards are the most reliable and feature-rich triggers, and therefore are the most expensive.
- Jason