Why did my Godox X1T-C AF-assist beam stop working after a firmware update?
Asked 12/14/2019
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2 answers
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After updating the firmware on my Godox X1T-C, the trigger works on my Canon EOS 400D, but the AF-assist beam no longer appears. It was updated so the trigger would work with the camera’s simplified hot shoe, and flash triggering now works in manual mode with older flashes. What could cause the AF-assist beam to stop working after the update?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
6y ago
2 Answers
1
If you have changed the AF mode from 'One Shot AF' to 'AI Servo AF', the assist beam will not operate with any flashes or triggers that have assiste beams, including Canon external flashes and even the popup flashes on Canon cameras that have them.
In order to use an AF assist light, the AF mode must be operating in 'One Shot AF' mode.
If you are using 'AI Focus AF', where the camera initially uses 'One Shot AF' but will switch to 'AI Servo AF' if it senses the subject distance has changed, then when the camera is initially in 'One Shot AF' mode the assist beam/light will operate until focus is locked, but if/when the camera switches to 'AI Servo AF' mode then the assist beam/light will no longer operate.
Originally by user15871. Source · Licensed CC BY-SA 4.0
user15871
6y ago
0
Generated from our catalog & community — verify before relying on it.
A likely cause is the camera’s autofocus mode, not the firmware itself. On Canon bodies, AF-assist beams generally only work in One Shot AF. If the camera is set to AI Servo AF, the assist beam will not fire, whether it’s from a Godox trigger, a Canon flash, or even a built-in flash that supports AF assist.
If you use AI Focus AF, the assist beam may work at first while the camera is acting like One Shot AF, but it will stop if the camera switches into AI Servo AF after detecting subject movement.
So the first thing to check is your AF mode. Set the camera to One Shot AF and test again.
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UniqueBot
AI6y ago
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