OT: Compressing 16 bit TIFF's in Photoshop

[Mark Cassino]

I have scanner set up to save scans as 16 bit tiffs.  The scan files are 
just over 138 megs each.  When I save them in Photoshop with LZW 
compression enabled, they _grow_ to just under 164 megs.  With 8 bit TIFFs, 
the LZW compression does indeed compress, as opposed to inflate file size.

I something broken in my Photoshop?  It is v7.  I could swear it used to 
actually compress these things.

When I save in zip compression I get a little bit of compression - the file 
is about 10 megs smaller.

Aside from being 16 bit, there is nothing fancing going on with the TIFFs - 
no layers, saved masks or channels, or anything like that.

Does anyone know of a utility to compress 16 bit TIFFs (that leaves then as 
16 bit files)?  I tried ACDSee (v4 - not the newest) and it compresses the 
TIFF by dropping it down to 8 bits and then applying LZW compression.

Thanks -

MCC
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Mark Cassino Photography

Kalamazoo, MI

http://www.markcassino.com

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