as new nikonian finding his way thru the MANY forums, I stumbled on your thread. CLS has had me baffled and I still am. shooting news I only used one on camera full power flash stone age tech. no finess. Ir with groups just is beyond me. I sure could use some hands on explaning. When are you giving another workshop?. I have PW flex TT5 coming, when they decode NIKON's system. I think That might be easier work with than all the preflash stuff. But I would still like some hands on flash instruction. whenever it is avalibale .