I recently purchased the 430EX III-RT. Before that, I had been using a Canon ST-E2 transmitter to control a 420EX. The 430EX III-RT is obviously a more capable flash, so I'm hoping to find out when flash lighting was last a topic in the EOS magazine. I have an issue by issue (buy credits, etc) subscription so I don't want to purchase issues of limited interest. Also, interested in what capability I have using the ST-E2 with the 430EX III. Most books out in the world are directed to the next generation of the transmitter and anything on the 430EX III is lacking other than its manual. My cameras are a 6d and 7d2. Thanks in advance.