Canon 5 D Mark lll + speedlight 600 + strobe

Hey guys I did all by instructions and my strobe dose work with v6 but the light doesn't


  • Hi @cebotari, do you have the Canon 600EX-RT?

    (1) Did you choose the corresponding flash profile on the V6 RX unit?

    (2) Is the flash set to TTL Mode?

    (3) Are both V6 TX and V6 RX units set to the same Channel?

    (4) Do the Group match up? 

    (5) What shutter speed is your camera set to?

    I hope the above list helps.
    If not please send us more information on your setup.

    Thank you!
    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", "FUJ.1.002", "NIK.A.001", "v.103".

    For the time being, Cactus V6 (MK1) running on firmware version 2.1.001 can be triggered by a V6 II (MK2) running on Multi-brand HSS firmware (e.g. 1.1.013) but not by X-TTL firmware versions:  PEN.A.001 NIK.A.001 OLY.A.001.  No schedule has been released yet for an "A" version firmware on the V6 (MK1). 

    Cactus RF60X / RF60 Firmware versions A04 and A03 currently ONLY works with PEN.A.001 NIK.A.001 and OLY.A.001.  Other "A" version of X-TTL firmware will be released soon. For both Multi-brand HSS and X-TTL firmware versions (FUJ, SIG, SON), install firmware version 103 / 205 on your RF60X / RF60.

    Nikon D750 users please read this thread: 

    Fujifilm EF-X500 users please read this thread:

    Feel free to suggest an improvement or share product ideas. Contact us directly at  At Cactus, we listen. 
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