V6 II hangs EOS M3

I am facing some issues with the EOS M3

1) The V6 II will disappear on camera after a while (flash icon missing)

2) The V6 II hangs the EOS M3 Ext Flash menu when TTL pass thru is enabled (it force shut down the camera)

3) Sometimes I can enable the TTL pass thru, it goes into an error.

Thank you.


  • Hello @slmka
    1. I wonder if it helps if you manually select both the camera system and flash system as Canon?
    2. The V6 II was not designed to function with any camera's External Flash Menu.
    3. Is the flash set to TTL mode? 
    BTW what flash model are you using?

    Antonio Lao
    Brand Manager

    To help us better help you, always state the exact firmware version installed on your Cactus device(s), such as: "1.1.013", "NIK.A.001", "v.103", or "A06".

    TTL or HSS not working on Cactus V6 II and V6 IIs? Be sure to check hot shoe connectivity by doing the <CAMERA INFO> check.

    Feel free to suggest an improvement or share product ideas. Contact us directly at info@cactus-image.com.  At Cactus, we listen. 
Sign In or Register to comment.