Hi Patrick, The only Pentax D-SLR that does wireless from the camera's in built flash is the *istD. All others require another flash unit to be attached to control the other flash units.
There are 3 modes of wireless P-TTL flash. Slave. Any flash that is to operated wirelessly needs to be set to this mode. Controller. If the flash on the camera is set to this mode it will trigger the slave flashes wirelessly but will not contribute any light (except for a very low power synchronising pulse). Master. If the flash on the camera is set to Master it will trigger the slave flashes AND contribute it's own power as well. You can have as many slave flashes as you like pointing in various directions - I've used up to 3. I also regularly use one master and one slave flash for macro photography. The small sync pulse put out by the flash in controller mode is enough to create a reflection if you are photographing through glass, or have a mirror or picture covered with glass directly in front of you in the scene. Hope this helps. -- Leon http://www.bluering.org.au http://www.bluering.org.au/leon Patrick Genovese wrote: > I've never used P-TTL so please be kind to me and forgive my ignorance > on the subject. > > The literature seems to suggest that to do wireless P-TTL you need a > flash unit acting as a controller and a slave unit to provide the > illumination. Does this mean that the controller does not / can not > be setup to provide some of the illumination ? > > Say for example you wanted to do contrast control flash wirelessly.. > Would it be possible to used the slave unit the main light and the > controller for fill in ? or vice versa. > > Regards > > Patrick Genovese > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
