Sigma 610 DG Super P-TTL Compatibility ???

Does anybody know about the compatibility of Cactus v6II with Sigma 610 DG Super (Pentax Version) ?

I tried that flash(really a good solid powerful flash) with the original Cactus V6 and had no luck regulating the power output of that Sigma blaster...


Anyone else had luck with the 2nd Version of that transceiver unit?


  • Very likely? Since V6 doesn't work, meaning it runs digital TTL protocols, which is what V6 II runs on.

    It's almost impossible to find one here in Hong Kong, we asked SIGMA Japan long ago but they don't have any left either.

    Good luck!
    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  At Cactus, we listen. 
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