Originally posted by deaning Sorted almost, if you use a remote and 3sec delay you lose the option for the camera to act as wireless master in flash settings. This seems seriously stupid on the part of Pentax.
I don't understand you say your using Yongnuos but then say you have the camera in wireless master.
The two options are mutually exclusive.
Pentax wireless flash is a function of their P-ttl system , Yongnuos do not support P-ttl
ergo you cannot sync any manual flashes from a flash configured as wireless master they will fire not in sync with the shutter leading to black images.
You should always have the body flash in normal or preferably manual when using it in conjunction with remote triggering accept for the aokatec triggers which support P-ttl.
If your triggers/flashes support faux Hss mode than you can use a P-ttl flash to trigger these with appropriate delays but not otherwise.