Has anyone ever used the AC slaves (e.g. http://www03.bhphotovideo.com/default.sph/FrameWork.class?FNC=ProductActivator__Aproductlist_html___112595___GBS___REG___CatID=1239___SID=E8D8A8ABEF0___call=features#goto_features )? How does exposure work with these? I take it it's not matrix-balanced . They seem like useful gadgets, and B&H's $25 SP-72 seems kinda cool for the price. I assume that it screws into a light-bulb socket. These might be good for a studio on the cheap. Just get a bunch of clamp on and long-necked lamps and screw some AC slaves into them.
#1. "RE: AC Slaves" | In response to Reply # 0JM Registered since 01st Mar 2007Wed 29-Aug-01 11:49 PM
I noticed these AC slaves and from reading the packages and cataloges they seem to be a fixed output. That would mean the EV on your subject, or the light's subject since it sounds like these would make good background or hair highlites use, would be a factor of distance. Since then it would just be a matter of working out the amount of light you need and balance the distance for good exposure.
If anybody wants to fill in the details or proper formula I'll leave the next space blank...