Q&A: How to Use Your Nikon SB-900 in Optical Slave Mode

As most of you know, the discontinued Nikon SB-800 speedlight has an awesome -- yet, oddly undocumented -- built-in slave. But given the questions I have gotten recently, many people who own the newer SB-900s are not aware that their flash has the same capability.

A walk-thru on how to access and use the built-in slave in your Nikon SB-900 speedlight, and how to get better results from any slave outdoors, inside. Read more »