Timing issues - Olympus OM-D EM-1 V6 and Nissin i40 TTL pass-through

After some pass-through TTL issues with a Nissin i40 on the V6 on an Olympus OM-D EM-1 (which seem to be down to the power-on order - I had to go bottom (camera) first) I am having some timing issues.

This is a rare setup which I would only use in rare occasions (e.g. wedding photography dancing) but was part of my testing.

Camera is an Olympus OM-D EM-1 - V6 on the hot shoe and a Nissin i40 in TTL pass-through mode (and in TTL) mode

Two remote groups - A is an Elinchrom Quadra triggered by a V6 in receiver mode and cable connected

B is an RF60 

A and B flashes are in manual mode obviously and are used as accent/rim lights

The onboard TTL flash is providing the key light.

Both channels are flashing - but the A channel is not appearing in the camera frame.

Anyone any ideas how to fix - clearly some timing issue.




  • Hello Alan,

    Thank you for your inquiry.

    Have you tried shooting:
    1. Without mounting the Nissin flash and turning TTL PASSTHROUGH off? 
    2. At a slightly lower shutter speed? help with synchronizing with the Elinchrom?
    3. Only with the Elinchrom setup?


    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", "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) and not by X-TTL firmware versions: PEN.A.001 and OLY.A.001.  No schedule has been released yet. 

    Cactus RF60X / RF60 Firmware versions A01 and A02 currently ONLY works with PEN.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.

    Cactus RF60 is now an off-camera TTL flash with firmware version 205 or later!

    Metz M400 (for Fujifilm) is now supported on the Cactus V6 II (HSS and TTL).

    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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