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Thread: Animating DOF?

  1. #1
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    Animating DOF?

    Hi guys,

    I have a scene where it starts off zoomed into a watch on a wrist (cam 1), pans up to the characters face (cam 2) and then zooms out (cam 3). Then cuts to a new angle (cam 4).

    I am using DOF with a Focal Distance of 5.7 and F Stop of 4.0 on cam 1. Then Focal Distance 2.2 and F Stop 1 on cam 4.

    Im pretty sure I was just changing the stats for cam 2 but I think this has disappeared.. Im also turning 7pass off to 1pass to render.

    Any help?

  2. #2
    Dimension the Third voriax's Avatar
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    I'm not entirely certain what you're having trouble with, but if you're trying to animate focal length and other settings over time, you need to use the envelope buttons next to the numeric/slider entries to animate them - otherwise they will just change and stay at whatever you change them to. Those settings don't automatically keyframe like object and camera movement.

    Also, if you're using pass-style rendering, you need more than one pass to create the DOF. If you're using 9.6 you can use the photoreal DOF which in theory should be faster and better quality.

  3. #3
    Super Member Nangleator's Avatar
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    Also, (take this advice if you like,) you don't have to worry about getting your whole movie into one scene. Cutting it into different scenes for different cameras and shots can be much simpler. LW is not ideal for video editing.

    We may have democracy, or we may have wealth concentrated in the hands of a few, but we cannot have both.
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  4. #4
    Registered User bjornkn's Avatar
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    Or you could use a null and tell the cameras focal distance envelope to use Proximity to follow the distance to the null. Animating the null animates the focal point. You could also animate the f.stop the same way.

  5. #5
    LightWave documentation BeeVee's Avatar
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    Yup, here's my explanation on LightWiki.

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  6. #6
    Registered User shapeshifta's Avatar
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    I use iDof, it's a great and inexpensive image filter plug-in.
    Just put 2 nulls in the scene and assign which you want as the center (no blur) and which null you want as the far point.
    For more info check out
    www.lwidof.net
    You can even download a demo.

  7. #7
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    iDof is great as a fast post processing option but unfortunately the drawback of this method is that it can't deal with transparency

    Using lightwaves in camera DOF is actually pretty fast these days anyway especially if you use a low AA along with adaptive sampling. More than one motion blur pass will also greatly improve the quality (even if there is no motion) but of course this will multiply the render time

  8. #8
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    Hey guys thanks for your comments, I will look into this tomorrow. Plug ins are a bit advanced for me. I was using envelopes. Im using a 7pass as this activates the DOF but motion blur photoreal is disabled, how do I enable this?

    Tomorrow I will play with the null idea.

  9. #9
    Super Member Nangleator's Avatar
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    Use Perspective camera, not Classic.

    We may have democracy, or we may have wealth concentrated in the hands of a few, but we cannot have both.
    ─Supreme Court Justice Louis D Brandeis

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