Camera twists issue

Adobe After Effects

Camera twists issue

Posted by Adam Zygadlo on May 6, 2011 at 11:52 am

Hey everyone,

Basically, I’ve produced a 3D box, where a camera stands next and looking at the box. The camera’s ‘point of interest’ & ‘position’ is expressed towards two nulls. and I’ve locked two rotation values in the camera, where it does twist when going into the box.

The concept is to animate the camera into the box, up over and then inside of it. The null for ‘Point of interest’ moves up and down to frame the box. The start of the animation has no problems, when it reaches to the top and when it begins to descends into the box, it starts to twist around.

The desire effect is I want to lock the twist when it gets inside of the box. Is there an expression that I can lock the twist issue? Am I missing something?

Many thanks in advanced!
Addz

http://www.jarbrain.com
‘Filled with brainy goodness.’

Adam Zygadlo replied 15 years ago 3 Members · 4 Replies
4 Replies

Walter Soyka
May 6, 2011 at 12:20 pm

If you parent the camera to a 3D null, you can use the standard position and rotation controls on the null to move and rotate the camera without having to worry about animating the camera’s position and point of interest separately.

Each method has advantages and disadvantages, but the parenting method sounds like it would be appropriate here.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
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Adam Zygadlo
May 6, 2011 at 1:01 pm

I thought about that too but you lose control but as you mentioned there are advantages and disadvantages to different methods.

Normally, I use the two null method as it provides a better control to the camera but it’s annoying when it randomly rotates as I highlighted before.

Looks like I have to bite the bullet and add rotation keyframes to counter balance the twist.

Thanks for spending the time, have a good weekend!
Addz

http://www.jarbrain.com
‘Filled with brainy goodness.’
Tudor “ted” jelescu
May 6, 2011 at 6:16 pm

I have found that building a camera rig helps animating the camera – I use a method similar to the one described here:
https://maltaannon.com/articles/after-effects/simple-camera-rig/

Tudor “Ted” Jelescu
Senior VFX Artist
Adam Zygadlo
May 7, 2011 at 2:19 am

Hey Ted,
That’s a pretty helpful link and I can see it being used in the near future or on the next project to test drive it’s benefits.

Thanks to everyone who replied,
+Z

Adam Jozef Zygadlo
Motion Graphic Designer

07708 124 915
http://www.jarbrain.com
‘Filled with brainy goodness.’

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