Creating 1 bit depth TIF file

KP
Posted By
kevin_pyle
Jul 3, 2008
Views
3062
Replies
2
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Closed
I tried the solution given in another message to change the doc to BITMAP mode and greyscale. When I open the file to work on it, CS2 says its CMYK / 8 bit. Is the file truly 1 bit depth? Our scanning software won’t allow the creation of templates on any other color depth.
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TT
Toby_Thain
Jul 4, 2008
If you save a Bitmap mode image, you’ll get a 1 bit TIFF.
GH
Gernot_Hoffmann
Jul 4, 2008
I don’t think so. A 100×100 pixel image, converted by
Grayscale > Bitmap > Save as Tiff
delivers 26 kBytes. If each image bit were packed into
one file byte, then we would get 10000 bytes.

The same image converted by
Grayscale > Bitmap > Save as Windows BMP > 1 bit depth delivers 1.6 kBytes
which is just a little more (because of the header) than the image content 100 x 100 / 8 = 1250 bytes.

Best regards –Gernot Hoffmann

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