Wi-Fi

An increasingly common feature on digital cameras at all levels. The camera sets up a Wi-Fi hotspot which you can then connect to with a smartphone or tablet. The camera maker supplies an app which you can use for transferring photos to the device and for controlling the camera remotely.

USB

Standard connection between cameras and computers, though these days most photographers would remove the memory card and use a card reader to transfer photos. USB ports can also be used for charging on some compact cameras and ‘tethered shooting’ on professional cameras.

Tethered shooting

A technique used by professional studio photographers where the camera is connected to a computer and the computer is then used for controlling the camera, checking pictures as soon as they’re taken and then correcting and enhancing them as necessary before saving.

Sync terminal or socket

A cable connector for socket external flash units that’s still found on higher-end cameras like pro DSLRs but is becoming less and less common as photographers switch to wireless flash systems. These are usually triggered by a ‘master’ unit attached to the camera.

NFC

Stands for Near Field Communication, a wireless transfer system that relies on very close contact between devices – sometimes you simply tap or touch the devices together to establish contact. It can be used for transferring photos from a camera to a compatible printer, for example.

HDMI

Standard digital interface for connecting video and display equipment. Cameras have HDMI ports for direct connection to TVs, for example, but more advanced models can also connect to external monitors for video recording, or external video recorders.

Commander mode (Nikon)

A flash control mode on some Nikon DSLRs and external flashguns (Speedlights) which can fire other Speedlights remotely via infra-red. It’s possible to control quite complex lighting setups in this way, and it’s part of Nikon’s CLS (Creative Lighting System).