PocketWizard CM-E3-ACC-1 Pre-Trigger Remote Cable Canon

Cm-e3-acc-1 1ft Mini Eos Cable
This is a special remote shutter release cable called a Pre-Trigger Cable. A Pre-Trigger cable controls both the half-press and full-press function of your remote camera’s shutter release. When a camera is “pre-triggered”, it is like holding your camera’s shutter release button in the half-pressed or metering/focusing position.

This –ACC cable allows a compatible PocketWizard radio to independently control both half-press and full-press functions.