Yongnuo YN-622C User's Guide download pdf (Page 8)

The Other YN-622C User Guide v.4.07

23/07/2014 Page 8 of 62

TERMS AND DEFINITIONS

The Devices

622C: An abbreviation for a YN-622C transceiver.

C-TX: An abbreviation for a YN-622C-TX controller. It does not refer to the YN560-TX

Hot-shoe, Hot-foot, Cold-shoe: The hot-shoe is the accessory fitting on top of camera and each

transceiver. The hot-foot has contacts and goes into a hot-shoe, e.g. bottom of a flash or

transceiver. A cold-shoe holds a hot-foot without making contact with the pins.

Wireless: This term logically includes radio, sound and light transmission communication links.

Canon uses “Wireless” for their light-pulse code communications from camera/Master flash to an

off-camera slave flash. The 622C cannot send or read light-pulse codes, using radio instead.

Roles

Transmitter (TX): A YN-622C transceiver (first released in August 2012) mounted on the camera’s

hot-shoe in the role of controller for remote units. (The transmitter will still act as a Remote to

another transceiver transmitting on the same channel.)

Remote Receiver (RX): A YN-622C transceiver (first released in August 2012) in the role of a

receiver with a remote flash connected by hot-shoe or PC-sync cable.

Controller (C-TX): A YN-622C-TX controller (released in June 2014) mounted on the camera’s

hot-shoe provides full settings capability in place of the camera menus.

On-TX flash: A hot-shoe flash mounted on the Transmitter. It has some special features.

(The C-TX Controller does not have a hot-shoe to mount a flash.)

Modes and Scope

Remote Mode (622C only): Remote control of flashes from the camera.

Mix Mode (622C only): Mixed remote and local (on-flash) control of flashes.

Global: Applying to all groups (A plus B plus C).

Local: Applying to the local device, such as a setting by hand on a flash.

Synchronising Flash with Shutter

Sync: Synchronous firing of flash when the camera’s shutter gives the command.

X-Sync: A camera’s fastest shutter speed when both curtains are fully open to a flash.

High Speed Sync (HSS): A method of extending flash emission to provide light during shutter

speeds faster than x-sync. It involves starting the emission before the curtains are fully open.

Super Sync (SS): YongNuo’s technique for using studio flashes/heads at a shutter speed faster

than the camera’s x-sync.

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Yongnuo YN-622C User's Guide Page 8