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 Post subject: Caustic SL
PostPosted: Thu May 24, 2012 5:21 pm 

Joined: Thu May 20, 2010 12:59 pm
Posts: 134
Hi all,

sorry if this has been covered before, but this is a question on SL when using caustics.

A SL of around 18 covers off the noise on most imagery that we've been rendering.
However, if you leave a render with certain caustic effects going in to the mid 20's, the next set of caustics appear (see attached). Very nice.

The problem is this, at SL18 the noise level is good with no fireflies but we're not getting in to the really nice, deeper caustics, but if we let the render go in to the 20's the fireflies appear and then this takes many SL's to smooth out (the simple torus attached is on 27 and still very noisy).

How are you guys working with this?
Do you save out a SL 18 image and then let the render tick over and see if the next level of caustics refine out? If not, you're still good to go with the image at SL18?

Cheers,

Steve

Image
Image


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 Post subject: Re: Caustic SL
PostPosted: Thu May 24, 2012 5:23 pm 

Joined: Thu May 20, 2010 12:59 pm
Posts: 134
sorry, try these:

http://www.freeimagehosting.net/yl791
http://www.freeimagehosting.net/3t1fz


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 Post subject: Re: Caustic SL
PostPosted: Thu May 24, 2012 8:13 pm 
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Joined: Sat Feb 24, 2007 11:50 pm
Posts: 7340
Location: Tulsa, Oklahoma
I usually do a few test renders to determine what S.L. I am happy with. Those types of multiple bounce caustics will take a long time, and when they first start appearing, they can be really messy.

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Brian Looney
Maxwell + RealFlow
http://lunatic-studio.com/
Help! I'm dispersing into a haze of probability!


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 Post subject: Re: Caustic SL
PostPosted: Fri May 25, 2012 9:52 am 

Joined: Thu May 20, 2010 12:59 pm
Posts: 134
cool, cheers.

Is there a typical SL that you find the multiple bounce caustics appear?

Cheers


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 Post subject: Re: Caustic SL
PostPosted: Fri May 25, 2012 2:25 pm 
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Joined: Sat Feb 24, 2007 11:50 pm
Posts: 7340
Location: Tulsa, Oklahoma
No. I can't say for sure.

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Brian Looney
Maxwell + RealFlow
http://lunatic-studio.com/
Help! I'm dispersing into a haze of probability!


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