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Activity Forums Adobe After Effects how to make objects spread out in 3D space look connected with moving cam?

  • how to make objects spread out in 3D space look connected with moving cam?

    Posted by David Lieberman on March 1, 2008 at 6:10 pm

    Hello,

    I’ve got a composition of many different objects in 3D space. They are all spread out some closer to the camera and some further…

    the important thing is that when the camera is in FRONT view of the composition, all the objects (which are made of lines) look like they are connected…

    I want the camera to shift at same level from left to right, but when i do this, the angles change and it is then clear that some lines are not connected to eachother and the gaps appear.

    Is there a way to keep them all in 3d space and move the cam without making those gaps appear? or am i just causing myself a massive headache and im better off just putting all the objects on the same level or even not do it in 3d space at all?]

    Sorry if i’ve confused you guys a bit..

    thanx for the help.

    Corbin Gross replied 18 years, 2 months ago 7 Members · 15 Replies
  • 15 Replies
  • Captain Mench

    March 1, 2008 at 6:26 pm

    If it works for you, I’d pre-compose all the lines into one comp.

    See if that gets you close.

    It really depends on why the camera is moving… you mean there are other elements that you want the camera to move around?

    CaptM

  • David Lieberman

    March 1, 2008 at 6:44 pm

    well, the reason why i move the camera is because i wan tto create the illusion of depth in the composition…precomoposing wont allow that… it will just move flately that way…

    i know im asking for much- creating depth whilst keeping all the object looking like they are connected lines…

    thanx for the help.

  • Scott Geersen

    March 1, 2008 at 11:50 pm

    surely you can just align the layers in 3d space so that the end of one (say, the right of the first line) lines up with the next (the left of the 2nd line)? like creating a snake out of many small segments. if your layers aren’t touching/instersecting in 3d space when you look at the top/right/left views, then they’re never going to line up when the camera moves. if you don’t want to see gaps, don’t arrange them with gaps. 🙂 sorry if that sounds obvious.
    it’s easier to work with two comp windows open at once. i prefer this to “2 views” as then i can make one of the windows (the top view) smaller and still see my comp camera view in the other window at full res.

  • Captain Mench

    March 2, 2008 at 12:17 am

    The only way then would be to extend the ‘lines’ so when you do move you’ve got coverage… or animate the lines to create the coverage.

    Can’t have something that doesn’t exist. — Extend your thumb and cover a stop sign… move your head… see the stop sign???

    CaptM

  • David Lieberman

    March 2, 2008 at 12:55 pm

    yes that makes sense, sorry i think im just giving myself a headache for no reason…

    the reason why i initially wanted to make it in 3d space is because its a stretched out composition. the camera will shift from left to right as the animation goes along… but i was planning on videotaping my girlfriend in a greenscreen and then add her to the composition to make it look like she’s walking in between the objects… that’s why i wanted the 3d space, to give it some depth as she walks through this ‘forest’…

    that’s actually my next issue. how to video tape her in a small room but make it look like she continueously walking from left to right without any jumps and any loops… BLA

    thanx for the help.

  • Aharon Rabinowitz

    March 2, 2008 at 4:05 pm

    I think you need to do 2 things here.

    1) Create a 3D composition with everything set up the way you want.

    2) Animate bot the camera and the layers to get the look you want. In other words, you’ll probably have more luck if you rely on more than the cameras motion to do the work for you. I’m not talking about major motion of the layers – just subtle stuff to correct anything that doesn’t look right after the camera makes it’s move. But do the layer animation and the camera animation at the same time.

    make sense?

    Aharon Rabinowitz
    Email: arabinowitz (AT) yahoo (DOT) com
    All Bets Are Off Productions, Inc.
    Creative Cow After Effect Podcast
    Internet Killed the Video Star: A Guide to Creating Video for the Web

  • David Lieberman

    March 2, 2008 at 4:20 pm

    yes. makes total sense!

    thank you!!!

    any ideas maybe about my greenscreen issues? the room is too small to film the girl walking from left to right for 2 minutes…can get about 10 seconds of wlalkign at the most… how would i connect loads of clips like that?

    thanx for the help.

  • Captain Mench

    March 2, 2008 at 5:49 pm

    Check out the SHOT BREAKDOWN QT movie…

    https://www.fxguide.com/modules.php?name=News&file=article&sid=463

    Basically, he looped/stabilized/keyed people running past the camera. Not sure exactly how ‘small’ your room is – did you really say closet? Grab a portable GreenScreen and have someone run behind her across the shot outside.

    CaptM

  • David Lieberman

    March 2, 2008 at 6:03 pm

    thank you,

    I dont have access to portable greenscreen or equpiment… If i did find someone, wont things like the floor affect it all?? i want to key her out completely, not just from the knees up…

    thanks

    thanx for the help.

  • Captain Mench

    March 2, 2008 at 7:55 pm

    Of course…

    Good point. Hmm — concessions abound, I guess.

    Good luck, though.

    CaptM

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