Re: 16bit tiffs

[Gene Crucean <genecrucean(at)gmail.com>]

We're testing those too but the problem with sgi's is that they aren't supported by PS without plugins. I have an sgi importer plugin on my system but I guess it is buggy or has issues. I personally haven't done any testing of that plugin other than open an sgi image.

On 2/1/06, Luc-Eric Rousseau <lucer(at)softimage.com> wrote:

why don't you use 16-bit SGI?  It's the most compatible format.

-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM]On Behalf Of Gene Crucean
Posted At: Wednesday, February 01, 2006 8:34 PM
Posted To: xsi
Conversation: 16bit tiffs
Subject: Re: 16bit tiffs

Haha, HEY it showed up! I sent this yesterday and it didn't get posted to the list at all. Unless I'm not recieving my own posts until someone replies to one of them. It seems like that's when they pop up.

Anyway, I called Soft today and they said it's a bug that's going to be fixed in the next release. The workaround is what Luc-Eric said. Pipe it through the FX Tree. Which imo sucks if you have lots of passes.

Btw, we've been using 8bit sgi's for a while but our flame guys want to step things up to 16 then output at 10 from flame. File format is the biggest issue at the moment. Once this gets fixed I think we'll be switching to 16bit tiffs.

Thanks for the input though guys.

On 2/1/06, Luc-Eric Rousseau <lucer(at)softimage.com> wrote:

no, that was the reverse question, loading tiff, this is about the
tiffs that are written.

16-bit tiff output is broken in Mental Ray.  Fixed build is not publically available. Use .sgi files instead, or fix the tiffs by going through the never-has-these-kinds-of-problems fxtree..

> -----Original Message-----
> From: Robert Moodie

> This was covered 2 weeks ago...
>
>
>
> ----- Original Message -----
> From: Halfdan Ingvarsson
>
> TIFFs are most likely to trip you up. LZW compressed TIFFs will be
> automatically embedded (there's even a warning for it)
> because mental images
> still stubbornly refuse to support it, even after the patents
> have expired.
> They got a bit testy after Pixar forced them to drop
> monte-carlo sampling
> due to their patent on it. Shake and Photoshop write out
> TIFFs with LZW
> compression on by default.
>
> Any other image format not natively supported by mental ray will get
> embedded in the file.
>
>  - ½
>
>
>
> ----- Original Message -----
> From: "Rui Feliciano" <ruifeliciano(at)isisds.com >
> To: <XSI(at)Softimage.COM>
> Sent: Wednesday, February 01, 2006 6:30 PM
> Subject: Re: 16bit tiffs
>
>
> Gene Crucean wrote:
>
> > Does anyone know how XSI encodes 16bit tiffs? Is it using LZW? If so
> > can we get an options button in the next release? Photoshop doesn't
> > seem to like xsi's tiff flavor and I'm willing to bet that they are
> > being compressed with jelly beans.

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