Can any radio flash triggers be used without a sync cable?

Question

I am looking for an inexpensive wireless flash trigger system to use with my Pentax k-x and an old flash I wouldn't trust on the camera hot shoe (Vivitar 550FD) because of its high trigger voltage. I see that the CowboyStudio NPT-04 wireless trigger can connect to a camera via a sync cable, perhapts in place of or in addition to using the hot shoe contacts. My camera does not support the use of a sync cable.

Can radio flash triggers be connected using a camera's hot shoe contacts without requiring the use of a sync cable?

Answer

The CowboyStudio NPT-04 trigger connects to the camera via hotshoe or sync cable, you do not need both, just one of them. I have it and have always used it hotshoe mounted.

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Are there any radio flash triggers capable of P-TTL?

Question

All the popular radio TTL flash triggers, like PocketWizard or RadioPopper, seem to be only available in Nikon and Canon flavors. Are there any models capable of transmitting Pentax P-TTL data?

Answer

So, having looked for some for a while, I'm going to have to sadly put forth "No" as the answer here. The TTL features of the radio triggers are relatively new, and their makers have (reasonably enough from a business point of view) gone with the market dominators first.

Hopefully, they keep hearing enough from Pentax users that they'll consider the smaller niche worth investing in eventually.

Personally, I keep holding out hope that Pentax (and now Ricoh) will simply include radio triggering as a basic feature built into an update of their flash system — but that's pretty much just a fantasy at this point.

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Will the “Pixel Knight TR-332” radio flash trigger work with a Canon 350D?

Question

I am using a Canon 350D/XT and found some information on web that the Pixel Knight TR-332 radio flash may be incompatible with that particular Canon camera due to DIGIC II and lack of Flash functions in camera menu.

I am wondering what, exactly, "incompatibility" means:

• Not working at all
• Missing some functions but generally shoots in (e)TTL / M etc

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Edit:
Source of information

Topic owner answered me that is should work, but I would prefer to know from someone really using it.

Answer

The PDF review mentioned on the same site (http://www.alphapics.co.nz/Pages/Pixel%20Knight%20TR-332.pdf) lists the 350 on the Compatible list. Sorry I can't answer your question more directly (I'd add this as a comment instead of an answer if I had enough reputation yet)

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