[Light_Horseman]

OK, I know it's a long shot but is there currently a way to get high speed sync to work on a wireless radio trigger for Pentax. Pocket Wizards don't support Pentax and AFAIK Radio Poppers still don't.

I want to expand my Strobist capabilities and I really want to overpower daylight for portraits while still using large apertures. Am I dreaming? Is there a product or hack to get it to work? Are TTL extension cords and the on-board wireless mode my only option?

[Venturi]

Are TTL extension cords and the on-board wireless mode my only option?

Unless some crafty vendor snuck one in under the wire, that's your only electronic option.

Neutral density filters are a possible option though depending on the situation. If you knock down the overall light with an ND you can bring the shutter down into the sync range. Then it's simply a matter of flash power.

[kenyee]

Get a studio strobe...less expensive but more back pain :-)

In theory Radiopopper PX's should work on Pentax but I haven't found anyone locally who has them to try (and I don't have two Pentax p-TTL flashes to try this with). All they do is translate optical pulses to wireless and then back...
You'll need to spend 2x Pentax 540AF + 2x RadioPopper PX to get this to work though...

[dlacouture]

I'd second the ND filter approach, as it's cheaper and it eats less power than HSS (do the maths, you'll see...).

On the downside:
- focusing is harder (but on plain sunlight, not so much, it even eases the eye strain).
- image quality can be deteriorated a little bit...

[Light_Horseman]

Thanks guys, that's what I thought.

I'll try the ND filter when I get the chance.

kenyee, any reason you specified the AF 540's? as I was looking at the Sigma 530 super purely for the price factor.

[jboyde]

Thanks guys, that's what I thought.

I'll try the ND filter when I get the chance.

kenyee, any reason you specified the AF 540's? as I was looking at the Sigma 530 super purely for the price factor.

Probably because the Sigmas, as good as they are, emulate P-TTL. If youre going to mod any part of a system youre usually better off with proprietary products.

If youre going to do straight PTTL wireless then either will work fine. I have a 540 and a Sigma 530 Super in my arsenal and both work great wirelessly as slaves or commanders.

[kenyee]

kenyee, any reason you specified the AF 540's? as I was looking at the Sigma 530 super purely for the price factor.

Only because they're a known flash that works properly w/ HSS.
But yes, the Sigma should work as well since they also use optical pulses...