• http://www.retinaphotography.co.uk SteveH

    I thought that there were limits on how long the cable could be due to power loss. Do you happen to know what the distance limitation would be for these?

    SteveH

    • http://www.sdphoto.com.au Sam

      Ethernet standard is 100m max I believe. And I think it’s running at similar voltages to signals for flashes too. Shouldn’t be too much of an issue.

      • http://photodelux.net photodelux

        There is a cable length limit for the ethernet protocol in networking for CSMACD – collision detection to work. This is due to the propagation delay of a copper cable. I did the math in college, but can’t find a good reference for it now.

        Since we’re not doing networking with multiple hosts communicating on this cable though, that 100m standard doesn’t necessarily apply… I’m not sure how the signal loss and propagation delay over distance affects ETTL signals though and if it passes through switches/repeaters… it’s something worth testing though. (switches repeaters on your equipment/not mine)

  • youpii

    Will they make a Sony version?

  • http://www.sdphoto.com.au Sam

    Wow, cool, might have to pick this one up when it’s actually out. Typically I use studio strobes, but this would be awesome for those situations where using a speedlight would be quicker and more convenient (due to TTL).

  • JackAllTog

    This looks very cool and is finally an alternative for Lastolite 3M cords. Only TTL to one flash makes sense.
    Does it require batteries, i imagine it needs coin batteries at each end.
    Also i guess that its not ethernet electrical signals so 100M range is unlikely. If it was ethernet, well you could route it over your LAN ;-)

  • http://photodelux.net photodelux

    There’s an A-B-C channel listed on here with On/Off switch for each… how does that work? The pics don’t give enough detail.

    Do you run 3 CAT5 cables from the transmitter?
    (It looks like there is 3 jacks on the TX…)
    Does the cable go to a switch/multiplexer?
    I presume you set each receiver for channel A-B-C?

  • http://photodelux.net photodelux

    Can I put the transmitter on top of a Pixel King wireless receiver (the transmitter acting as a flash-ettl-multiplexor) to fire 3 nearby flashes via ETTL CAT5 cable?

    [camera/PK TX]
    | # wireless
    [PK RX/VM] (Pixel King receiver & Componor master)
    / | \ # 3x CAT5 cables from VM to VS
    [VS] [VS] [VS] (Comopnor slaves with ETTL flashes)

  • http://ranger9.net Ranger 9

    Old thread, I know, but an update on the cable-length issue: I made a homebrew extender and found that for TTL use, I started running into problems once cable length got longer than about 10m. The flash would still fire, but the camera did not recognize the (weaker) TTL signal, so could not be switched into TTL mode.

    Obviously this will vary according to camera system, cable quality, electrical signal interference, etc. but don’t expect to plug in a 50mm Ethernet cable and have everything work reliably!

  • Tyler Briley

    I realize this thread’s old, but I just stumbled upon it. Anyone know if these will fire flash manually on a camera that isn’t Canon or Nikon?

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