GPU with the convolve as well. Glad you figured it out. 

Michael


Michael
On Jun 2, 2014, at 6:35 PM, Darren Coombes <[email protected]> wrote:

> Yeah that seems to describe the problem pretty well, as it seems to pop every 
> 70-80 frames, I tried using a convolve node and flare setup and that seems to 
> be a whole lot smoother also.
> 
> Darren Coombes - VFX Compositor
> 
> Check out some of my work…
> http://vimeo.com/82865049
> 
> Mob:  +61 418 631 079
> Skype:  darrencoombes
> Twitter:  @durwood81
> 
> On 3 Jun 2014, at 10:45 am, Nathan Rusch <[email protected]> wrote:
> 
>> Some of the guys here ran into this same issue with ZDefocus awhile back 
>> when doing a tight rack-focus over a long shot.
>>  
>> If what you’re seeing is the same issue, it comes down to Nuke effectively 
>> using a Reformat operator internally when it scales the convolve kernel (as 
>> the aperture disc changes size), and since reformats can only output at 
>> whole-pixel dimensions, you get popping as it crosses kernel sizes.
>>  
>> Someone ended up building a replacement specifically for that situation that 
>> used a Transform to scale the kernel; it was somewhat slower, but smooth.
>>  
>> I would definitely report what you’re seeing to The Foundry. It’s a pretty 
>> major issue to have in defocus tools.
>>  
>> -Nathan
>> 
>>  
>> From: Darren Coombes
>> Sent: Monday, June 02, 2014 5:15 PM
>> To: Nuke user discussion
>> Subject: Re: [Nuke-users] defocus seems to pop between frames
>>  
>> Yes, just tried with Z defocus and it is still popping.
>>  
>>  
>> Darren Coombes - VFX Compositor
>>  
>> Check out some of my work…
>> http://vimeo.com/82865049
>>  
>> Mob:  +61 418 631 079
>> Skype:  darrencoombes
>> Twitter:  @durwood81
>>  
>> On 3 Jun 2014, at 7:06 am, Frank Rueter|OHUfx <[email protected]> wrote:
>> 
>>> Is this also happening with ZDefocus? If not, just use that with a constant 
>>> colour in your depth channel.
>>> 
>>> On 3/06/14 5:21 am, Michael Bogen wrote:
>>>> Try setting the “method” to "full precision”. I have also heard that doing 
>>>> that help with speed as the full precision is threaded better. If that 
>>>> makes sense.
>>>>  
>>>>  
>>>> Hope this helps,
>>>>  
>>>> Michael
>>>> On Jun 2, 2014, at 12:09 AM, Darren Coombes <[email protected]> wrote:
>>>> 
>>>>> Hi, i’ve got a script with a defocus going from 200 to 0 over say 500 
>>>>> frames, but every 70 frames or so, it seems to pop or glitch between 
>>>>> neighbouring frames and not continue to decrease in value smoothly.
>>>>>  
>>>>> Any ideas?
>>>>>  
>>>>> Thanks.
>>>>> Darren.
>>>>>  
>>>>>  
>>>>> Darren Coombes - VFX Compositor
>>>>>  
>>>>> Check out some of my work…
>>>>> http://vimeo.com/82865049
>>>>>  
>>>>> Mob:  +61 418 631 079
>>>>> Skype:  darrencoombes
>>>>> Twitter:  @durwood81
>>>>>  
>>>>> _______________________________________________
>>>>> Nuke-users mailing list
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>>>> 
>>>>  
>>>> 
>>>> 
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>>> <ohufxLogo_50x50.png>       vfx compositing | workflow customisation and 
>>> consulting
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>>  
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