How to Use a Wireless Trigger for Off-Camera Flash
By Borge's Imaging — Shop Photography, Printing and Studio Gear in Melbourne Borge's Imaging | Published: 2026-10-23
Category: How-to Guides
Learn how to set up a wireless flash trigger for off-camera flash. Step-by-step guide covers pairing, placement, and common mistakes to avoid.
Quick answer
To use a wireless trigger for off-camera flash, mount the transmitter on your camera hot shoe, pair it with a receiver connected to your flash, then test the sync before shooting.
Why a wireless trigger beats a sync cable
A sync cable limits your flash position to the cable length and creates a tripping hazard. A wireless trigger gives you freedom to place the light anywhere within range — typically 60–100 m indoors or up to 200 m outdoors — without running a cord across the floor.
Wireless triggers also support features like high-speed sync (HSS) and remote power control, which are hard to achieve with a basic cable. The trade-off is that you need batteries in both the transmitter and receiver, and you must ensure the trigger is compatible with your camera and flash system.
Choosing between radio and infrared triggers
Radio triggers (like the Elinchrom Skyport PRO or Hahnel Captur) work through walls and in bright sunlight because they use radio frequencies instead of line-of-sight light signals. Infrared triggers require a clear path between transmitter and receiver and can be unreliable outdoors.
Most modern off-camera flash setups use radio triggers for their reliability and range. If you shoot in a studio with controlled lighting and short distances, an infrared system can be cheaper, but radio is the safer choice for location work.
Step-by-step: Setting up your wireless flash trigger
- Insert batteries and mount the transmitter: Install fresh AA batteries into both the transmitter and receiver. Slide the transmitter into your camera’s hot shoe and lock it in place. Common mistake: using nearly dead batteries — weak power can cause intermittent misfires or reduced range.
- Connect the receiver to your flash: Attach the receiver to your flash’s foot or sync port (depending on the model). For studio strobes, use a sync cable from the receiver to the flash’s sync input. Common mistake: forcing a cable into the wrong port — check the connector shape and size first.
- Set both units to the same channel: Use the channel selector switches or menu on the transmitter and receiver to match the channel number (e.g., Channel 1). Some triggers also let you set a sub-channel or group to control multiple flashes independently. Common mistake: forgetting to set both units — if the flash doesn’t fire, channel mismatch is the first thing to check. Always test-fire the flash before you start shooting. If it doesn’t fire, re-check the channel and battery levels.
- Position the flash and test the range: Place the flash where you want it, then walk around with the camera to confirm the trigger works at your intended shooting distance. Obstacles like metal shelves or concrete walls can reduce range. Common mistake: assuming the trigger works through thick walls — test in your actual environment.
- Adjust flash power and sync settings: Set your flash to manual or TTL mode as needed. If your trigger supports HSS, enable it on both the transmitter and flash to use shutter speeds faster than your camera’s native sync speed. Common mistake: leaving HSS enabled when you don’t need it — it reduces flash power, so turn it off for normal sync speeds.
Products mentioned in this guide
- Elinchrom Skyport PRO Transmitter For Canon: The Elinchrom Skyport PRO Transmitter for Canon offers HSS sync up to 1/8000s and a 200 m outdoor range. This lets you overpower the sun with fill flash at fast shutter speeds, useful for outdoor portraits and action shots.
Elinchrom Skyport PRO Transmitter For Canon - Hahnel Captur Remote Timer Kit - SONY: The Hahnel Captur Remote Timer Kit for Sony supports time-lapse and bulb exposures with a 100 m range and DCM (Digital Channel Matching). It doubles as a remote timer for long exposures or time-lapse sequences, making it a versatile tool beyond basic flash triggering.
Hahnel Captur Remote Timer Kit - SONY
