RE: Rendering - png files.

Date : Thu, 8 Nov 2007 18:33:19 -0000
To : <XSI(at)Softimage.COM>
From : "Adam Seeley" <Adam.Seeley(at)primefocusworld.com>
Subject : RE: Rendering - png files.
Hi,

Having a look at png crush, seems like it could do the job. 
Not quite sure what gamma level I should replace to get it to look correct though as it already looks correct when loaded into photoshop or the fxtree, which is the look I ultimately want.

A.

> -----Original Message-----
> From: owner-xsi(at)Softimage.COM 
> [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Joe Laffey
> Sent: 08 November 2007 17:38
> To: XSI(at)Softimage.COM
> Subject: Re: Rendering - png files.
> 
> On Thu, 8 Nov 2007, Adam Seeley wrote:
> 
> > Hi peeps,
> >
> > Quick question.
> >
> > We're rendering a lot of elements out in .png format for 
> web content.
> > When I open a rendered image in the windows viewer or 
> quicktime, the colour looks washed out.
> > When I open it in Photoshop or the XSI fxtree, the colours 
> look fine.
> > When I re-save the image back out of Photoshop as a .png 
> the file now looks ok in the windows viewer or quicktime.
> >
> > Is there a colour profile setting that should be controlled 
> when the png is written? or something like that?
> >
> > Here's an example image, the jpeg shows the proper colour 
> of the ball.
> >
> > Anyone seen this before?
> 
> 
> PNG format can store gamma information. Some programs 
> interpet this. Some do not. You might try using something 
> like pngcrush (google), a command line util that can replace 
> or remove the gamma value.
> 
> --
> Joe Laffey                |       Visual Effects for Film and Video
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