Floyd L. Davidson
nospam <nospam@nospam.invalid>wrote:

nospam
In article <8761gjta3t.fld@barrow.com>, Floyd L. Davidson <floyd@apaflo.com>wrote:

however, if you change the ppi the print will be different.

Floyd L. Davidson
Changing the PPI tag in the image file is *not* what changes the print.

nospam
yes it does.

Floyd L. Davidson
Poor nospam. We can post 30 different identical copies of an image file, with only the PPI tag being different. Anything from 7 to 7000 will do. When loaded into an editor... the image data will be exactly the same for every one of them.

nospam
that's what i said originally, then you said ppi applies to displays. now you say it doesn't. hilarious.

Floyd L. Davidson
You are the only one claiming that, not me. You obviously haven't got a clue!

Each and every monitor operates at a given PPI. So does each and every printer.

The tag in the image file,

1) has no effect at all on the monitor, and

2) has no effect at all on the printer, and

3) has no effect at all on the editor, and

4) has no effect at all on the image.

Because chaning the PPI tage in the image file does nothing.

nospam
it does when printing, which is what i said.

Floyd L. Davidson
It doesn't do a thing.

Set the Exif tag to 72, 360, 720, or 7200 and then tell the print driver to make an 8x10 print. It will, but it will run at it's own PPI rate, not the one set in the Exif tag.