Thanks George. I'll keep that in mind.

Yes, of course. I figured that out later, but at that time I was already laying in bed...

Thank you guys for helping me out with this !

Ragnar

I think it's getting clearer now
- Manual mode, no P-TTL.
- AF160 on camera and my 540 as "first" slave.
- Optical slave triggers with any type of power adjustable guns as "last" slaves.

Matt, why is it that the pop-up flash cannot be used to trigger "dumb slaves" ? And in my above scenario, couldn't the AF160 be replaced by the pop-up ? If not, why (since only one flash is needed) ?

Ragnar

Ok. If we assume one master/controller (my built-in) and one slave in P-TTL mode (my 540) as the nearest gun, and further away two more slaves (in adjacent rooms, out of reach from the controller, but in reach from the 540). Is it possible to trigger the last two slaves from any strong enough flash that they pick up (the 540) ? They don't need to participate in P-TTL, just manual mode. If that is possible, I just need two more guns. No cables, battery packs etc. They just need to filter out the preflashes (how many is there ?). What is the cheapest flash gun that will do the job, is it a Pentax 360 ?
(Sorry if I have misunderstood you, but it's a bit confusing with all the terms : master, slave, controller, main flash etc).

Regarding hdr and photoshop blending - I do that all the time already. But now I want a quick way to get decent exposures from start.

Thanks for comments

I'm learning to take daytime indoor pictures (interiors, "house pictures") with a mix of flash light and ambient light, and it would
be very interesting to hear your recommendations on how to improve things.
Today, I have only one external flash (540 with diffusor), which I combine with the built-in flash (with a diffusor in front) set as
master since two light sources are better than one.
I'm not quite satisfied - especially in a big room or when two adjacent rooms are to be shot. I have considered radio triggers, but that means extra equipment that may/may not be reliable, more batteries that are exhausted at the wrong moment etc. Could I trigger the 540 (now set as master) from the built-in flash (still master) and just add one or two extra manual mode optical slaves (which will trigger from the nearest/strongest master) ? I realize that I need line of sight between the masters and the slaves. Since I'm using a pre-flash with the 540, the slaves must be able to handle that. Would I need Pentax slaves (360 ?) or are there cheaper alternatives (suggestions ?)? I only need manual mode for these.

Any advice is most appreciated.

Ragnar

From your test Chris, it looks to me that
- in controller mode the remote flash is affected
- in master mode both flashes are affected
Thanks for sorting this out.

Thanks for advice !

Can someone please tell a newbie like me how to include an image in a forum post ?
When I press the "Image" button, all that happens is this :


Thanks
Ragnar

If I use a AF-540 as a wireless slave to my K10d with the built-in flash
set as controller, I suppose the compensation will affect the remote flash gun.

But what if I set the built-in flash as master, would that compensation affect both or just the built-in (or just the remote) ?

Thanks
Ragnar

Thanks for the additional welcomes !
It feels good to know that you can get in touch with so many people and share experience, tips & tricks.