I am somewhat of a newbee to photography, but I have a Sigma EM-140 Ring Flash with a 18-250mm Sigma lens. In short, when I use the camera with the ring flash I can't get it to take photos that ...
I was new to this CLS technology from Nikon and wanting to make full use of this technology. Unfortunately recently I just bought a Sunpak ring flash and it does not support CLS function. May I know ...