On Wed, 30 Apr 2014 11:58:59 +1000, Peter Jason
wrote:

Not to be one of these, which I have tried twice.
http://www.bhphotovideo.com/c/produc...e_Control.html

Peter


Thanks to all.

I'll check these out. The Hahnel product worked,
but broke down twice.. so out it goes. Also it
was very hard on the batteries.