I had my SB-600 with a medium size softbox on a tripod. My new SB-700, attached with my Gary Fong Lightsphere was perched on my camera on another tripod. I placed the SB-600 (slave) to one side and turned the flash head/softbox up towards the ceiling. My camera was turned sideways (portrait) and the SB-700 (master) flash head was turned up towards the ceiling as well.
I had to program my SB-600 as a slave. Not having any instruction book handy, I just played with a couple buttons. Okay, not knowing what all the icons and symbols meant...I headed over to my buddy Google.com and found what I needed. I made the change on my flash to slave and it gave me the default channel 3 and group A.
I configured my SB-700 to master which entailed holding down a button and turning the flash on to Master on the dial. That was way too simple. I tried a test flash with the master flash and noticed my slave wasn't going off. Hmmmmm. I remembered the number 3 and the letter A from the slave flash default setting. I looked at the settings again on the master and noticed it was on channel 1. A quick change to channel 3 and I was all set.
It took several shots before I finally got the hang of taking a self portrait using the two flashes. Here's my first studio test shot.
BTW, I also used my corded remote control to take the pictures. All I had to do was plug it into my camera and it was ready to go.
I'm just having way too much fun!
