[Sidefx-houdini-list] shutter time less than .5, no mblur

[Larry Giunta]

Yes Andras. Thank you, that was the culprit,

I was sourcing a ton of motion channels using "chf", but was using $F  
instead of $FF.

Once I changed those to $FF motion blur kicks in for shutter time  
values less than .5

Thanks again. You saved the night!!


On Mar 6, 2008, at 3:55 PM, Andras Ikladi wrote:

> Hi Larry,
>
> Are you rendering DRA sequences or have File SOPs (or any other kind
> of discreetly sampled animation data) in your renders? As it happened
> to me before, I suspect you're not getting motionblur because your
> data is only available on the integer frames or not interpolating
> correctly ($F vs. $FF..etc).
>
> Hope this gives a clue,
> Andras
>
> On Wed, Mar 5, 2008 at 8:00 PM, Larry Giunta  
> <larry at gcreativestudios.com> wrote:
>> I'm hitting a bit of a wall trying to tweak down the amount of motion
>>  blur that is rendered on each frame
>>
>>  Rendering with mantra, if I drop the shutter time on my camera to a
>>  value of less that .5,  I get no motion blur at all.
>>  Should that happen??? I get the same in 9.0 and 9.1.
>>
>>   From .5 to 1 and above I get motion blur just fine.
>>
>>  I have X form time samples and geo time samples each set to 2 on the
>>  output driver.
>>
>>  I'm wondering if another setting has to be change so values of less
>>  than .5 will
>>  still render some motion blur.
>>
>>  Thanks as always for any thoughts.
>>
>>  Larry
>>
>>  --
>>  Larry Giunta
>>  Creative Director
>>  G Creative Studios
>>  (781)393-0200
>>  larry at gcreativestudios.com
>>  www.gcreativestudios.com
>>
>>
>>
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