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    Senior Member g.l's Avatar
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    David, you found that VSYNC isn't a reliable indicator of actual sync right - so doesn't that make it useless?


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    I'm seeing correlation with manual lenses - however - I don't need to check because I never get initial offset with manual lenses. I get massive offset approximately 25% of the time with M 4/3 lenses - and - there is no correlation to VSYNC. I'm working on a theory.... ISO gain and available light MIGHT be playing a role in the offset. I usually test in the dark, with only the light from the CRT illuminating the room. I THINK the offset problem is less prevalent when more light is available or the ISO is lower. This is a wild guess theory at the moment - I'll have to test to see if there is a shred of truth to it.


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    Check this out.... I was shooting a stranded pilot whale rescue in the Florid Keys last Thursday with my GH1 rig when I was approached by John Landau (Producer, Avatar & Titanic) !! He asked a lot of great questions about stereo with the GH1. Specifically, he wondered if Panasonic knows what we're up to. He seems like a hell of a good guy and was genuinely interested in a hack camera that could produce quality results. He didn't want to trade me for two of his new Epics, however :-)



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    Senior Member g.l's Avatar
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    I'm working on a theory.... ISO gain and available light MIGHT be playing a role in the offset. I usually test in the dark, with only the light from the CRT illuminating the room. I THINK the offset problem is less prevalent when more light is available or the ISO is lower. This is a wild guess theory at the moment - I'll have to test to see if there is a shred of truth to it.
    If it is light-related, then it might be the aperature.

    Check this out.... I was shooting a stranded pilot whale rescue in the Florid Keys last Thursday with my GH1 rig when I was approached by John Landau (Producer, Avatar & Titanic) !!
    Nice .


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    Senior Member g.l's Avatar
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    I've confirmed that the GH2 also doesn't allow external mics and remotes at the same time, details in V's thread here.


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    Hi, I'm building a 3d RIG very similar to the one here, but to make it work properly (Fully calibrated), I need a couple of XYZ PLate, I want something simlar to this:

    http://www.3dfilmfactory.com/index.p...d=56&Itemid=79

    I really apreciate if someone point me to an Alternative, Thanks


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    Senior Member g.l's Avatar
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    Quote Originally Posted by andycorleone View Post
    Hi, I'm building a 3d RIG very similar to the one here, but to make it work properly (Fully calibrated), I need a couple of XYZ PLate, I want something simlar to this:

    http://www.3dfilmfactory.com/index.p...d=56&Itemid=79
    Interesting, I'm just finalising my side-by-side mount (pics and footage when I have it), and an adjustable plate like that would definitely be useful - far too expensive for me though.

    If my alignments get too rough (and they don't seem that bad so far) I'll look into a DIY solution. But if anybody knows something cheaper, let us know.


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    GH2-3DD on the pr3Dator
    Senior Member g.l's Avatar
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    Here's my GH2-3DD rig, mounted on my DIY'ed side-by-side mount, the pr3Dator:





    The mount is based on a couple of chopped-up shelf runners. The camera platforms are on ball bearings and can smoothly adjust interaxial between ~14cm -> 50cm. The arms that hold the platforms can then slide out to give a maximum 80cm for super-hypers.

    The shutter circuit is driven by a modifed generic remote (seen dangling), which feeds N-channel mosfets. 8-pin AVR-based timelapsing is also implemented.

    Everything is powered by a single 6800mah 12V Lithium-ion battery (which will also drive my 50%-done stereo monitor, that's what the arm in the middle is for), which also serves as the power-cycler. The circuit regulator drops that down to ~9.1V (any less would fail with a 10m DC power extension, for super-super-hypers ).


    1st Quick Test Footage
    - watch in on Youtube in your preferred 3D mode and HD (1080p stutters like crazy here though :/ ).



    Last edited by g.l; 06-10-2011 at 05:56 PM.


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    Nice rig! Can't wait to see footage! Think we should create a Stereoscopic GH1/2 Vimeo or YouTube group for footage?


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    Senior Member g.l's Avatar
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    Quote Originally Posted by David Cole View Post
    Nice rig! Can't wait to see footage!
    I've updated my last post with it (watch it on Youtube in 3D @ 1080p).
    Last edited by g.l; 06-10-2011 at 06:03 PM.


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