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From: Phil Harvey <phil@owl.phy.queensu.ca>
Subject: Re: [Tiff] BigTIFF extension
Date: Wed, 4 Jul 2007 15:59:23 -0400
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Status:   

On 4-Jul-07, at 2:52 PM, Toby Thain wrote:
> Which is going to cause mucho confusion when a user is trying to  
> open SOMETHING.TIF with a tool they expect can process TIFF (which  
> they know is implied by .TIF).

For reference, here are the error messages when I try to open a
BigTIFF image with extension TIF or BTF in a few software packages
that I happened to have at hand:

Adobe Photoshop 7.0 (TIF):
   "Could not open "Olympics8.tif" because the file is not a TIFF file."
Adobe Photoshop 7.0 (BTF):
   "Could not open "Olympics8.btf" because it is not the right kind of
    document."

Microsoft Word (TIF):
   "This application cannot open this file.  This file is an unsupported
    graphic format or may be damaged.  Try opening the graphic in
    another application."
Microsoft Word (BTF):
   "Office cannot use the picture file you selected.  The file may be
    damaged or it may be a file type that Office does not recognize.
    For more information about picture file types you can use in Office,
    see Help."

Apple Preview (TIF):
   "Couldn't open the file.  It may be corrupt or a file format that
    Preview doesn't recognize."
Apple Preview (BTF):
    [will not open the file]

GraphicConverter (same two errors for TIF or BTF):
   "The TIFF internal directory is corrupt.  The file can not be
    opened."
   "Can't open TIFF because important tags are missing."

- Phil

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