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From: Jim Kanter <jim@d-film.com>
Date: Sat, 9 Feb 2013 18:41:04 -0500
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Message-ID: <CA+n2HHOV2r0Un2idPAr1NWfCjpQj2NE_EVbdMNuwhryjmpDfVA@mail.gmail.com>
Subject: Re: [AE] Classic Color Burn
To: After Effects Mail List <AE-List@media-motion.tv>
Content-Type: multipart/alternative; boundary=047d7bdc06f0c63a6304d5533699

--047d7bdc06f0c63a6304d5533699
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>From Wikipedia:


   - The *Color Burn* mode divides the inverted bottom layer by the top
   layer, and then inverts the result. This darkens the top layer increasin=
g
   the contrast to reflect the colour of the bottom layer. The darker the
   bottom layer, the more its colour is used. Blending with white produces =
no
   difference.



On Fri, Feb 8, 2013 at 4:15 PM, Chris Zwar <chris@chriszwar.com> wrote:

> FWIW, the 'classic' effects clip any HDR values and only work properly in
> 8 / 16 bit modes.
>
> On 09/02/2013, at 2:57 AM, S=E9bastien <yenaphe@gmail.com> wrote:
>
> Hi gang,
>
> Does anyone have the math powering the Classic Color Burn blend mode from
> AE ?
>
> I'm trying to recreate the effect but can't find the math in the Adobe PD=
F
> Reference guide 1.7 or older (it's one of the few missing).
>
> Cheers,
>
> Seb
>
> --
> S=E9bastien
>
>
>   Maison d'=E9dition fond=E9e en mille neuf cent deux mille douze
>   overlook-publishing.com
> **
>
>
>

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<div dir=3D"ltr">From Wikipedia:<div><br></div><div><ul style=3D"line-heigh=
t:19.1875px;margin:0.3em 0px 0px 1.6em;padding:0px;color:rgb(0,0,0);font-fa=
mily:sans-serif;font-size:13px"><li style=3D"margin-bottom:0.1em">The=A0<b>=
Color Burn</b>=A0mode divides the inverted bottom layer by the top layer, a=
nd then inverts the result. This darkens the top layer increasing the contr=
ast to reflect the colour of the bottom layer. The darker the bottom layer,=
 the more its colour is used. Blending with white produces no difference.</=
li>

</ul></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On=
 Fri, Feb 8, 2013 at 4:15 PM, Chris Zwar <span dir=3D"ltr">&lt;<a href=3D"m=
ailto:chris@chriszwar.com" target=3D"_blank">chris@chriszwar.com</a>&gt;</s=
pan> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div style=3D"word-wrap:break-word">FWIW, th=
e &#39;classic&#39; effects clip any HDR values and only work properly in 8=
 / 16 bit modes.<div class=3D"im">

<div><br><div><div>On 09/02/2013, at 2:57 AM, S=E9bastien &lt;<a href=3D"ma=
ilto:yenaphe@gmail.com" target=3D"_blank">yenaphe@gmail.com</a>&gt; wrote:<=
/div><br><blockquote type=3D"cite">Hi gang,<br><br>Does anyone have the mat=
h powering the Classic Color Burn blend mode from AE ?<br>

<br>I&#39;m trying to recreate the effect but can&#39;t find the math in th=
e Adobe PDF Reference guide 1.7 or older (it&#39;s one of the few missing).=
<br>
<br>Cheers,<br><br>Seb<br clear=3D"all"><br>-- <br>S=E9bastien<br><br><img =
src=3D"http://www.overlook-publishing.com/App_Themes/des/img/logo.png"><br>=
=A0 Maison d&#39;=E9dition fond=E9e en mille neuf cent deux mille douze<br>=
=A0 <a href=3D"http://overlook-publishing.com/" target=3D"_blank">overlook-=
publishing.com</a><br>


<b></b>
</blockquote></div><br></div></div></div></blockquote></div><br></div></div=
>

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