how do you... sync shutter speed over 180?

I can't seem to sync my flash to a shutter speed over 180 on my k20d.
I have both the 360 and 540 pentax flashes and i have tried on and off the camera.

The reson i ask, is that i am following most of the information on the strobist 101 and 102 blog. In the balance flash/crosslighting section it recomends that using a shutter speed below 250 is tricky.

I'v read numerous posts and the k20d manual, but i can't seem to do it.

any help would be great,

Thanks!
Matt

Just tried it on my K20D with the 540 on camera, no problem.
Set the flash to High Speed Sync, set the camera to shutter speed (in manual mode) and Bob's your uncle.

MattMatic's Pentax dSLR Flash Guide might be an interesting read for you...

Prieni

Don't forget, all you Metz users - The Metz (and K10D) will do it too

Thanks, I now have it working with the flash on the camera silly me - that was pretty easy!

Still not sure how to make it work with the flash off the camera though. From the k20d manual, it looks like i have to use a flash attached to the camera and one off the camera - both set to high speed.
The problem is, that when i do this, both flashes fire when under 180 shutter speed, but when i go over 180 only the flash attached to the camera will fire.

perhaps mattmatics guide is a good idea!

Thanks

Just had a quick play around. You're right, when you have no flash on camera it won't go below 1/180 shutter time. When you put flash gun on camera, same thing.
But when you set the on camera flash gun to wireless (and controller), then it works at shutter speeds below 1/180. Only the off camera flash fires.

Hope that helps,
Prieni

P.S.: MattMatic's flash guide is always a good idea

Ah, brilliant. So the camera mounted flash needed to be on controller. It works now. Thank god i don't have to keep blinding myself trying to figure out if the flash went off or not!

I think i will order mattmatics guide.

Many thanks! all seems so easy now

Here's the test shot I did of my coffee mug (looks quite neat and brought me on to another idea... thanks for that):
[IMG]http://i156.photobucket.com/albums/t5/Prieni/_PRI6646pu.jpg[/IMG]

Prieni

Oh great
That's just what the rest of us need

That looks very nicely lit.
I'm going out to play now, to see if i can balance the sun and fill flash. So far i have only really used the flash in p-ttl mode, so going manual on the flash and on the camera will hopefully teach me quite a lot (or confuse me completely!)