I have an Opteka EF-600 that I want to move off-camera with the CTR-301. I like the flash so I was considering picking up a couple more in the future. The lowest it goes is 1/16 in manual mode. Is that good enough when I start experimenting with 2 and 3 light setups? I will mostly be taking pictures of the family against a white or black backdrop, maybe some outdoor stuff as well.