I've checked threads on here and haven't found anything, please direct me if I've missed one.
I've had this set up working fine - off camera SB600 set up to go off - while pop up flash does not go. I don't know what's happened but I can not get the pop-up-flash to stop working. I go into camera settings bracketing/flash, go into commander mode, set Built-iin-flash as --, and set group A as TTL, channel 1 (same as on my SB600 (Group A channel 1).
Only every time I set up camera pop of flash is also going. I don't know what I've changed? It used to be fine - and now I get flash from both sources and I don't want that. What have I done? Anyone have any clues?