DPX scan with very dark value (below 95) goes under 0 once in
linear. What technique do you use in those cases ?
On Thu, 21 Apr 2011 16:13 +0000, "Tahl Niran"
<[email protected]> wrote:
why would you have negative RGB values in a linear pipe?
there are many Nuke nodes that will clip at 0, especially
mergers. I think you need to take a look at what your colour
conversion to linear is doing.
the only time I would expect to see negative values would be
in secondary channels like pWorld or maybe zDepth and
generally speaking the only thing I would use a grade node for
is to maybe normalise depth.
----------------------- Tahl Niran vfx compositor
www.tahlniran.com
_________________________________________________________
Date: Thu, 21 Apr 2011 11:19:15 -0400
Subject: Re: [Nuke-users] Grade clamping
From: [email protected]
To: [email protected]
the reason is in alpha channel - matte.
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Hugo Léveillé
TD Compositing, Vision Globale
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