I have only the most basic understanding of flash sync. My D3200 is limited to 1/200 or slower. Now why can't I go faster? Does the flash take that long to fire? I figure this sync speed is only limited in some auto mode, going manual should allow faster shutter speeds. I am not real hung up over going faster because it seems lately all my shooting has been in the 1/50 th range. I'm just curious as to the whys and limits. Would the nikon book linked above be a good resource for a flash newb?