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From: Craig Bruce <csbruce@cubewerx.com>
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Subject: Re: [Tiff] Re: BigTIFF
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Status:   

Gary McGath <gary@hulmail.harvard.edu> wrote:

> The possibility of modifying and rebuilding software to make it
> compatible is not the same as compatibility in existing software. If
> you run any existing TIFF reader on any BigTIFF file, the reader will
> be unable to interpret it.

I believe the BigTIFF spec says something to the effect that if the
writing application determines that it will not be generating a >4GB file
that it should write ClassicTIFF instead.  Therefore, "BigTIFF" is 100%
compatible with all existing software up to 4GB.  The writing application
will normally know all of the parameters before-hand to make this decisio=
n.

BigTIFF is also 100% compatible with all existing software for ClassicTIF=
F
images above 4GB.  (Since there is no such thing.)

So there you have it -- 100% compatibility.

--------------------------+----------------------+-----------------------=
---
Dr. Craig S. Bruce        | Ph 819-771-8303 x205 |             CubeWerx I=
nc.
Senior Software Developer |   Fax 819-771-8388   |  Gatineau, Qu=E9bec, C=
anada
csbruce@cubewerx.com      |  http://csbruce.com/ |  http://www.cubewerx.c=
om/
--------------------------+----------------------+-----------------------=
---
         "Isn't it funny how the farmers are starving but I am not."
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