Hi Colin,

thanks for you reply! Unfortunately this won't work. I have "dead" alpha 
samples pretty much everywhere, so also in front of the element I would like to 
keep. Doing a DeepHoldout results in a pure black image. And with a 2d 
DeepHoldout I loose my deep samples anyway. Using the DeepMerge set on holdout 
has the same result. Also I couldn't find a "remove empty pixel" checkbox, do 
you mean the "drop hidden samples"?
So I guess there is no way of getting rid of deepsamples without writining my 
own DeepOp?

Best Regards
Patrick

----- Original Message -----
From: [email protected]
To: [email protected]
Date: 17.10.2012 19:05:27
Subject: Re: [Nuke-users] Delete Deep Pixel samples


> 
> You could use a deep expression to create a version of the image that turns 
> all samples with an alpha of 0.0 to an alpha of 1.0 and black RGBA with the 
> rest being set to 0.0 - then use that as a deep holdout with remove empty 
> pixels on. 
> 
> Maybe.  I haven't tried it with Nukes tools - but a thought.
> 
> On 2012-10-17, at 12:18 PM, [email protected] wrote:
> 
>> Hi everyone,
>> 
>> even though this might sound crazy, is there a way to delete deep samples in 
>> Nuke? I have a rendering here, where some pixels have an alpha value of 0 
>> and still a bunch of deep samples, which I want to get rid of. 
>> I tried using the deep expression node with 
>> "deep.front=rgba.alpha==0?0:deep.front". First of all, the expression 
>> doesn't do what I want, instead I get 0 everywhere, wheter alpha is 0 or 
>> something else. Second with a DeepSample Node I still have those samples, 
>> now with 0 for deep.front,back,r,g,b and a.
>> Any ideas?
>> 
>> Best Regards
>> Patrick
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