I currently use a sb-600 and an umbrella for doing portraits. I was thinking of an additional flash in the near future for adding contra light. A cheap option is the Nikon sb-r200. From what I've been reading it's a dedicated wireless flash - but it says for macro work. Why only macro? Anyway, I have a D200 and currently use commander mode to control my sb-600. I've read that the sb-r200 works with Nikon's CLS, but, on the page linked below, it says there is no commander feature. Is command mode and CLS something different? Can my D200 communicate with the sb-r200 natively? Thanks!