Originally Posted by srclark 
Hi all,
The title pretty much says it all. I'm going to be buying a set of cybersyncs within the next few days. I'm going to use the cybersyncs to trigger a viv285 flash manually off my camera. I'd also like to be able to attach my 540 to the camera. I mentioned in the title that I'd like to use the on camera flash in p-ttl but I suppose Auto-thyristor would work for the oncamera flash as well. Forgot to mention this is on a K10d.
So basically I either need to connect my 540 directly to the camera shoe, then connect the cybersync transmitter somehow to the flash? (the problem is I'm not sure what the options are for a f5p -> pc cord are, or if such a thing exists)
Or else I need to get some kind of a hotshoe adapter to sit between the flash and camera that would allow a pc connection to the cybersync transmitter. The pentax hotshoe adapter F looks like such an adapter, except the extra sync port it provides is the pentax f5p layout.
Does anyone have experience with this? It seems like this problem boils down to needing an f5p to PC adapter. I know this would be easier with a k20d and it's nice dedicated pc sync port. I'm hoping to hold out upgrading bodies for a bit though.
-Sam
I don't know what a cybersync transmitter is and have no experience with Pentax hotshoe flashes but I routinely use the built-in flash on my K10D to trigger a Vivitar 283 off camera. This is done via a Wein Peanut slave that plugs directly into the 283 (and I believe the 285 as well). If you go this route, be sure to get the digital version of the "peanut" which ignores the pre-flash you get with the built-in flash.
The only problem is if you are taking pictures somewhere where other people are popping their flashes. In such a situation, some sort of radio slave like the Pocket Wizards would be better.
Richard