posted on Sep, 4 2012 @ 01:04 AM
Originally posted by Aninonymous
Thanks for the breakdown.
I work in the modeling/animation side of 3D. Thats why I assume frame by frame.
I'm not much on postproduction though, and all that ghosting/bluring your talking about would probably done in that, right? Like in After Effects
I dunno, all I know is I couldn't do it... at least not without making it look like a cartoon...
There is multiple ways to produce such an effect both in compositing and in 3D apps. They are all procedural.
- A standard way to do it would be to enable motion blur in your composition and attach it to a virtual camera. You likely use virtual cameras in 3D
but don't configure shutter speed etc ... unless you're doing animation. This would produce standard motion blur based on the movement of your camera
which in this instance would be tracked to the sky.
- Time stretch or plugins like twixtor which effect temporal resolution (time/frame rate) if used some mix frames or use frame blending to interpolate
(generate) frames. If done incorrectly it will create ghosting
- If compositions frame rates are set up incorrectly, some comp systems (like after effects and nuke) will try to interpolate frames to correct the
problem. So for example mixing two plates/footages at 25 frames and 30 frames it will cause issues. 30 frames is the standard that after effects often
imports images sequences
- For rack defocus style stuff you need a good method to introduce highlights the way they would function in a real camera. Many amateur artists will
use gaussian blur or something similar with key frames applied to both plates or they will use the settings in their virtual camera. It rarely
produces good results.
All of the above are what I would call 'prejunior' techniques. You have to be able to not make these mistakes/use these techniques prior to having an
entry level position in visual effects and post production. Actually in this day and age, editors are meant to have the skills to do 2D tracking and
many are expected to do the job that was previous of an online editor.
Hope it helps
edit on 4-9-2012 by Pinke because: (no reason given)