off camera with the D300. So here goes..
First the camera
Click on the menu button and go to CUSTOM SETTING MENU
Select option e: Bracketing/Flash.
Next Select option e3 Flash cntrl for built-in flash
Next Select the Commander mode option
Next have a look at the Built-in flash setting, by default this is set to TTL - cycle through it till you see
the "--" (you have a choice of Manual, TTL or "--") this minimises the amount of flash coming out of your pop-up flash. You can pretty much leave the Group A and B settings as is (in TTL) or dial in + or - compensation depending on your need (in this particular instance we only have one flash so we are only actually using one or the other (A or B). Next Select a Channel (1 to 4) I happen to like the number 3 so thats what I've selected
Now the flash
Switch the Flash to remote using that little button/switch on the bottom right hand corner.
Next we need to set the flash to match the settings we did on the Camera (Group A, Channel 3)
the current group/channel are displayed at the top of the LCD screen.
To select a group press on the small button on the left most side (there is a set of 3 just below the LCD screen, its the one with the green dot beside it) and it will cycle you through the available groups(A,B,C).
To select a Channel (we want channel 3)use the second button from the left