Flash Synchronization

In this video lesson we discuss several flash sync options.

• PC Cords
• Sync Cords, Dedicated/TTL
• Optical TTL
• Optical, non-TTL
• Radio

Radio is, by far, the most convenient and reliable option.  However, I’ve included descriptions of other solutions because you should understand what they are in case you come across a situation where radio is not an option.

Each brand of camera, flash, and triggering have their own way of handling flash synchronization.  So, be sure to consult with your manual(s) for specific instructions on how to use their features.  Also, make sure that you use compatible gear.  Especially where TTL is being used, your flash controller/trigger and/or flash must be compatible with your camera’s TTL system.

For example, in the video, I show a Canon 7D with an ST-E2 optical Speedlite Transmitter designed to relay Canon-specific eTTL signals to remote Canon (or compatible) Speedlite units.  Canon also has proprietary radio transmitter options including the ST-E3-RT.  Of course, you might opt for a 3rd-party solution like the Godox X1Tc (“c” for Canon compatibility) transmitter and a set of Godox flashes.

To sync up remote flash units for use with my Sony A7III, I often use the Godox X1Ts (“s” for Sony compatibility) and a set of Godox TT685 flashes as you’ll see in many of the demonstrations to come.  The TT685 units have built-in radio receivers, so external flash sync receivers are not necessary.