Cannot Make AF-Assist Beam of 600EX-RT to work on 1Dx

Started Jul 31, 2012 | Discussions thread
Thomas KP Lee
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Re: Cannot Make AF-Assist Beam of 600EX-RT to work on 1Dx
In reply to thenibster, Jul 31, 2012

thenibster wrote:

Hi Thomas,

This set up seems to be working fine for me. Just confirm you're shooting in One Shot AF, not AI Servo. The AF Assist beam has never been compatible with Servo AF.

Another position to check, is the Custom Functions in the Flash. You can access this either on the Flash, or through the camera itself.

Select External Speedlite Control (Shoot Menu 3) > Flash C.Fn setting > Option 8 needs to be set to 0. (8:0). This enables the AF-assist beam firing.

Hope that helps!

Nibby

Nibby, thanks a lot, I had set my 1Dx at "Servo AF", that's why the AF assist beam did not work, once change to "one shot" AF, then the AF Assist Beam come, even with the old ST-E2. I totally cannot remember this restriction.

 Thomas KP Lee's gear list:Thomas KP Lee's gear list
Canon EOS-1D Mark IV Canon EOS-1D X Sony SLT-A99 Canon EOS 70D Sony Alpha 7R +3 more
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