I am replying to two different emails here...
On Tue, 14 Aug 2007, Helge Hafting wrote:
> PNG is a lossless format, so it is OK even if it is compressed.
> (PNG compression does not cause any errors or blurring,
> quite unlike jpeg.) So feel free to use compressed png in
> order to get a smaller file. TIFF is the same as png - a lossless
> format. Either should work exactly the same, although the
> TIFF might be bigger.
Thanks. I turned it up from 0 to 9 and now my file sizes are very small. I
also read some about the compression.
On Tue, 14 Aug 2007, William Adams wrote:
> Actually, you'll get better quality if you _don't_ resample the images, but
> instead, merely set them to the desired physical print size.
Okay. I see that The GIMP has Image-->Print Size... ("Set Image Print
Resolution"). So I changed my width from 16 inches to 6.00 inches which
automatically changed the height and resolution. And it went from 72x72
resolution to 192x192.
Thanks. It appears to be better. Here is an example:
http://www.reedmedia.net/~reed/tmp-axwkfcvufbvu/letter-size-image-test.pdf
(225234 bytes)
In the above example, on screen and also the printed copy the 192
resolution looks better than the 300 resolution. (Both at 6in.)
Now I need to re-do all my images again :)
> Turning on the direct interpolation key when saving them as a .eps or .pdf
> will help w/ some RIPs as well, but I don't know if GIMP can do that.
I don't know about that.
> At any rate, you'll need to tell the printer that they should accept the
> probably low-resolution images
I don't think my printing company doesn't offer that option for me. I do
have a copy of a book printed by them with examples of 300 ppi images and
they are acceptable.
> That said, the best option is re-creating or re-drawing the screengrabs so
> that they're resolution independent or can be rendered / scanned at print
> resolution --- Michael Harvey did the latter for his book _Creative
> Lettering_.
I never thought about re-creating the images, but that is too much time
for me now. Thanks for the idea.
Jeremy C. Reed
