 | | | DOF and Depth Pass problem | DOF and Depth Pass problem 2005-03-22 - By Stuart Hall
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On a completely different tack, I prefer to render out a separate depth
pass as a 16-bit SGI because it is anti-aliased and can have motion
blur. It doesn't take long and if the animation doesn't change it only
has to be done the once.
Just a thought.
Stu
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf
Of Daniel Atanasovski
Sent: 22 March 2005 10:41
To: XSI@(protected)
Subject: RE: DOF and Depth Pass problem
Morten, here is part of the picture in both rgba and dof renders...
www.axis.com.mk/xsi
daniel
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf
Of
Morten Bartholdy
Sent: Tuesday, March 22, 2005 11:18
To: XSI@(protected)
Subject: Re: DOF and Depth Pass problem
Just out of curiosity - can you post a pic showing original rgb and DOF
with
the weird look? I have used it lately without any problems so I'd like
to
know what might pose a problem.
Regarding converting Z-pics to rgb Luc-Eric posted this not long ago:
quote:
"the difficulty lies in the fact that zpics are not image, it's the
zbuffer
and the values
go from 0 to as much as minus 100,000, which you want to compress in a
smaller range.
The first step is shaving the range that you don't need with the pixel
parser.
First load the .Zpic in the compositor. Then add a Pixel Parser node.
type in the formula : 1-((1-pixel)*100000)/a1
Now, using the "a1" slider you can narrow down the ZPic around 0 to 30
(the
distance in Softimage Units). Type in a greater value if appropriate.
You can fine-tune the contrast by adding a Luma Adjust node.
A file output node to save the final .pic file"
- unquote
You could also just create a depth pass and render out 16 bit or float.
If
you have After Effects or Combustion you might want to check out
Lenscare at
http://www.frischluft.com
--
Morten Bartholdy | morten@(protected)
Denmark
-- -- Original Message -- --
From: "Chris Marshall" <chris@(protected)>
To: <XSI@(protected)>
Sent: Tuesday, March 22, 2005 10:52 AM
Subject: Re: DOF and Depth Pass problem
> It's a bug. I asked this not too long ago and the answer was to use
After
Effects. I think it's possible to convert your zpics into rgb and use
that
in conjunction with a blur filter. Not ideal though. I think there was a
thread on XSI Base about converting zpics, or was it here?
>
>
>
> -- -- Original Message -- --
> From: Daniel Atanasovski <casting@(protected)>
> To: XSI@(protected)
> Sent: Tue, 22 Mar 2005 02:00:33 +0000
> Subject: DOF and Depth Pass problem
>
>
> > Hi Everyone,
> >
> >
> >
> >
> >
> > It's little late here and I'm having problems with the FX tree and
the
DOF
> > operator.I'm trying to connect RGB pass and Depth Pass (or zPics) to
the
> > Depth of Field operator in the FX tree, and everything works fine
once I
> > turn off the Preview button in the DOF operator it gives me weird
multiplied
> > images. Can someone explain in couple of steps how can I use the
Depth
Pass
> > with the DOF operator. Such a simple thing it's been keeping me here
so
> > late.I hope it's not a bug.
> >
> >
> >
> >
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Daniel.
> >
> >
> >
> >
> >
>
>
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