Wireless tethering
Wireless tethering connects a camera to another device over Wi-Fi rather than a cable, so photos transfer in real time without a physical connection.
Wireless tethering uses the camera's Wi-Fi (over PTP/IP) to create the same live link as a USB cable, freeing the photographer to move around — useful for weddings, events and anywhere a cable would get in the way.
It's typically a little slower and more sensitive to interference than wired USB, but for many shoots the freedom of movement is worth the trade. Most modern mirrorless and DSLR bodies support it.
How it works
A wireless tether swaps the cable for a network. The camera's Wi-Fi function either creates its own network or joins an existing one, and the tethering app connects to it with PTP/IP. After a one-time approval on the camera, each new frame is announced and pulled across the air just as it would be over USB. Bluetooth, which many camera apps use for pairing and small previews, is far too slow to move full-resolution files; the photos themselves travel over Wi-Fi.
An example: an event photographer on the move
At a conference an event photographer works the room for three hours. A cable to a phone in a pocket would snag on every lanyard, so the camera joins the phone's hotspot instead. Shots land on the phone as they're taken, and the organiser's Dropbox folder fills up during the coffee break, ready for the social team.
Wireless or USB?
USB is faster and steadier, keeps the phone's own Wi-Fi free and leaves the camera's Wi-Fi radio off, which saves battery. Wireless wins on freedom of movement. Many photographers use both: a cable at a fixed position such as a press bench, Wi-Fi when they need to roam.
Wireless tethering with CloudTether
CloudTether tethers over Wi-Fi on supported bodies: Canon through the camera's EOS Utility remote-control function (verified on hardware), Nikon's newer Z bodies in STA mode, and newer Sony bodies with wireless PC Remote. Fujifilm Wi-Fi is experimental, so use a cable for paid work. The app's connect screens walk through each brand. See wireless camera tethering and how to tether to a phone wirelessly.
What affects the speed
Three things decide how quickly a frame arrives over the air: the size of the file, the strength of the Wi-Fi link between camera and phone, and how busy the airwaves are. Big RAW files feel the difference most, which is why many photographers shoot RAW+JPEG and send only the JPEGs live. A crowded venue full of phones and access points can slow a wireless tether even when both devices are side by side.
Tips and common mistakes
- Keep the phone within a few metres of the camera; walls and crowds weaken the signal.
- Turn off a VPN on the phone — it can hide the camera from the app.
- Carry a USB-C cable as a fallback for the day the airwaves are crowded.
- Wi-Fi drains the camera's battery faster, so pack a spare.
Put it into practice
CloudTether tethers your camera to your phone and delivers every shot to the cloud, live as you shoot — no laptop.