Power not set automatically via TTL

I am using a Nikon system: D5300 + SB600.
I have the system set up to use TTL. The camera is set to TTL, so is the flash. The flash display shows the TTL icon.
Both cactus units are set to the correct system settings for camera and flash. The TX is set to TTL mode. It's status window show the letters 'TTL'.
To me all is set up to use TTL.
However the power is not set correctly when talking a photo.

What am I doing wrong?


  • This is an update for my post.
    I notice that the sb600 is put in 'FP' mode instead of 'BL'.
    I am unable to change this. Only when I mount the flash on the TX unit on the camera, the flash is in 'SB' mode.
  • The V6II does not support TTL via radio. It is a manual power control system only.

    Setting the V6II Tx to "TTL mode" only enables "TTL pass-through", i.e., a flash on top of the V6II Tx will be able to communicate with the camera using TTL.

    All off-camera flashes need to have their power levels set manually via the V6II Tx dial.
  • edited November 2016
    I guess I was misinformed by the person selling me these ... because this is what I was actually looking for.
  • I guess I was misinformed by the person selling me these ... because this is what I was actually looking for.
    I am sorry to hear about this.

    We will contact the dealer so they can make sure all their sales staff get the same product information.

    Please look for a private message in your inbox, @airtema. And again, we apologize for any inconvenience this may have caused you during this time.

    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 info@cactus-image.com.  At Cactus, we listen. 
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