Of course…you can often separate the background from the foreground and use different lens blurs on them, without the z-channel hooked up to it. And then do the motion blur with motion vectors.
Another way is rendering everything in 3d, this is often too time consuming and also you as a compositor loose a lot of control.
A third way is adding a z-depth depth of field and then using a motion blur without using motion vectors.
There are times when you would want to control motion blur and Dof in the compositing using the channels (z-depth and motion vectors). As I see it the best would be "a blur" that you can input both z and motion and steer everything from the faceting in the bokeh to the shutter speed and generate a combined blur from that.
I haven’t worked in any big post houses. So I hope that someone out there has a great work flow for doing such a thing and are willing to share there experience :). Maybe there are lots of workarounds?
Post a Comment