Does Canon 70 d has a bulit in triggering the flash! Or I need a third device!

Hello. Well, I turned off the camera speedligt but I could not do proud without having built in flash on. What happens if I want to use the camera light speed without one on the camera. as I know that canon has a bilut regier and I did not need third party peripheral!
Thank you

The firing the flash using the flash on the camera and it is optical. You can 'turn off' the flash to use only the flash off camera, but the on-camera flash should always be raised.

It will fire a pre-Flash, while the shutter of the camera is always closed to assess the light (if you use E - TTL instead of manual) and also to send instructions to the camera flash (again, for the E - TTL... but also to tell the off camera flash when fire.). The calendar has a fractional period. Then he tells flash off camera to fire trees, opens the shutter, then the detached flash (and only the off-camera flash), then the shutter closes.

This all happens VERY quickly and you'd swear two flashes fired at the same time - when in fact the on-camera flash fires when the shutter is closed, and the detached flash fired his last shot when the shutter is open.

To do this, you will need to go into your control the flash menu and tell him to 'disable' the on-camera flash. Disabling does not mean that the flash get used... It simply means that it does not at this final moment when the shutter is actually open.

Also note that, because it using visible light (no IR) to convey instructions, detached flash sensor must have line-of-sight to the on-camera flash. If it is a flash like the Canon 430EX II Flash speedlite, the sensor is in the lower part of the Flash. This means that you may need to rotate the lower part of the flash to face the camera, then rotate the flash head to send the light where you need it. If the lower unit, simply is facing toward the front you will find that it is less reliable (especially on the longer distances or outdoors).

Tags: Canon Camera

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