As far as order of operation goes, I did my camera/object motion blur operation 
first, z-depth second. In my mind, I see the motion blur as a property of the 
scene you’re capturing - and the depth as a function of the device - the camera 
iris, sensor and lens - doing the capturing. That’s probably an arbitrary 
distinction, but it seemed to work the way I wanted it to. I could adjust how 
long the motion blur streaks were - essentially the shutter or exposure, if you 
will - and then determine how much depth of field I wanted and where the focal 
point needed to be. Also, downstream, I had other camera effects, such as lens 
distortion, chromatic aberration, highlight glow, lens barrel vignette and 
grain/noise.

Rich



On Dec 26, 2013, at 2:25 PM, Joe Laude <[email protected]> wrote:

> I know the exact problem you're talking about, and it probably depends a lot 
> on the situation. The last time I ran into this situation, I think I did DOF 
> first, then MB.
> 
> I'd say the one that's going to be the most extreme, you should do second. 
> Little motion, shallow DOF, do MB first then DOF; and vice versa, if there's 
> more deep DOF, and more MB, do DOF first, then MB. If they're both extreme, 
> try both and see which looks better. Might just need to finesse some parts.
> 
> Sent from my iPhone
> 
> On Dec 26, 2013, at 12:41, Gary Jaeger <[email protected]> wrote:
> 
>> I know it’s a common question, but I’m curious if there are any tricks to do 
>> both in post?
>> 
>> Gary Jaeger // Core Studio
>> 249 Princeton Avenue
>> Half Moon Bay, CA 94019
>> 650 728 7060
>> http://corestudio.com
>> 
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