Canon DSLRs can trigger Canon Speedlites using the pop-up flash. If you try triggering those same Speedlites with a different camera’s flash,it doesn’t work, which means that there’s actual light-based communication going on between the DSLR and Speedlite. In this 9-minute video, and Roger Nieh of Science’n’me explores the technology behind this communication. “believe you […]
Source: google.com