Yes yes, however they are NOT consistent, there are slight differences, so I'm wondering what would be the explanation for the gamma process to not be perfectly reversible?<div><br></div><div>cheers and thanks!</div><div>
<br clear="all">Daniel Salazar<br>3Developer.com<br>
<br><br><div class="gmail_quote">On Sat, Dec 17, 2011 at 3:03 PM, <span dir="ltr"><<a href="mailto:dfelinto@gmail.com">dfelinto@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
The gamma node is doing a simple pow operation:<br>
color_out = color_in ** gamma (as in 8 = 2 ** 3)<br>
<br>
And looking at your sample file it seems consistent.<br>
Linear ** 2.2 = sRGB<br>
sRGB ** (1/2.2) = Linear<br>
<br>
You don't use gamma 2.2 to linearize a sRGB image to Linear. You use<br>
1/2.2 for that.<br>
Gamma 2.2 is the gamma already present in the sRGB colour space.<br>
<br>
<a href="http://codereview.appspot.com/5488046/" target="_blank">http://codereview.appspot.com/<u></u>5488046/</a><br>
</blockquote></div><br></div>