Re: TIFFs

Subject: Re: TIFFs
From: Averil Strauss <averil -at- LEGENDCOMM -dot- COM>
Date: Wed, 12 Jun 1996 11:29:40 -0400

>>Someone once told me that there were at least 6 or 8 _different_ TIFF
>>errrr... standards?

>No, just several zillion different options available for the format.

Actually, there are, including versions published by both Aldus (the
original, I think) and Adobe. Then there are later modifications by those
companies, other companies, other people who have just added a little detail
that suited their job...

>When saving as a TIFF in PMView, I have the following options:

>-------------------------------
>Compression - Bilevel Images
> No compression
> Packbits
> LZW
> CCITT RLE
> CCITT FAX3
> Uncompressed mode
> 2-dimensional encoding
> Fill to byte boundary
> CCITT FAX4
> Uncompressed Mode

>Compression - Color Images
> No compression
> Packbits
> LZW

>LZW Differencing Predictor
> Apply Horizontal Differencing

>Strip Size
> 4k
> 8k
> 16k
> 32k

>Photometric
> White is Zero
> Black is Zero

>Byte Ordering
> IBM PC
> Macintosh
>-------------------------------

Many of these options are accretions, not part of any published standard.

>As you can see, it's a very flexible format; unfortunately, that also
>leaves a lot of room for incompatibility with applications and
>platforms that don't fully support all the available options.

I couldn't agree more! I prefer to stick with .EPS; that way I can almost
always make it print in the manual whether or not it shows on the screen.


Averil
Legend Communications, Inc.
Makers of PostScript and Imposition Software
http://www.legendcomm.com

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