By disabling intensity clipping or going in Raw clip you have different result which isn't what I am looking after.
I guess by activating it you go to a Linear result only. But well it s just speculation.
Harry Bardak
TD / Compositor.
Http://perso.wanadoo.fr/harry.bardak/
+33 6 76 63 35 54
+44 781 661 4147
-----------------------------------------------
> Date: Wed, 7 Jun 2006 09:38:13 -0400
> From: bmillerxsilist(at)gmail.com
> To: XSI(at)Softimage.COM
> Subject: Re: Framebuffer and Gamma
>
> Hi Harry,
> I think the artifact is due to Intensity Clipping. If you turn that feature off, the image renders correctly (for me, anyway..)
> Brett
> On 6/7/06, Harry Bardak <hb_xsimailinglist(at)hotmail.com> wrote:
> Hi everyone,
> After the read of Luc Eric's article on xsi-blog, I was experimenting different approach to understand the Linear color space.
> I am a bit stuck in my investigation because I met probably a bug in XSi.
> If you look to these image :
> http://perso.orange.fr/harry.bardak/img/Mr_bug_Gamma_1.jpg
> http://perso.orange.fr/harry.bardak/img/Mr_bug_Gamma_0455.jpg
> http://perso.orange.fr/harry.bardak/img/Mr_bug_Gamma_22.jpg
> When I change the gamma value on the active effects tab, I got this kind of spike.
> I guess it s a bug because it's appear only when you use mitchell or lanczos filter.
> Box, Triangle, Gauss aren't affected by that or maybe they are too soft to get theses sample.
> I don't think it's come from my computer but I'am using the last Intel dual core sytem. I don't have access to others computer so if someone can test this simple scene it would be great and we could report it as a bug to the support team.
> Harry Bardak
> TD / Compositor.
> Http://perso.wanadoo.fr/harry.bardak/
> +33 6 76 63 35 54
> +44 781 661 4147
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