Hi, Claude and thanks for the guidance...
I see what your saying, but there is a noticable
difference in the print quality of an image that is 72dpi that has
been increased in pixel dimensions to match at print at 300dpi
with the same pixel dimensions. (Probably has more to do with
JPEG compression than anything else) That's why I prefer to have two
separate files...one for onscreen display at 72dpi and one for
downloading and printing at 300dpi.
My experience has been that the 300 dpi image will provide a better
print than the 72 dpi image at the same pixel dimensions...
Rick
> -----Original Message-----
> From: Claude Schneegans [mailto:[EMAIL PROTECTED]
> Sent: Thursday, September 11, 2003 10:21 AM
> To: CF-Talk
> Subject: Re: Image manipulation
>
>
> >>300 dpi for better printing and would also want 72 dpi versions
> of those photos for screen display,
>
> What I mean is that dpi just doesn't mean anything as far as
> the image itself is concern:
> - dpi is important as a parameter for the scanner;
> - dpi is important as a parameter for the printer.
> but as a parameter inside an image it just does mean anything.
> I know that some image format contain some resolution value,
> but this it still does not make sense.
> You can still print a 72 dpi image at 600 dpi if you want
> and vice versa.
> The resolution is a measure proper to a piece of equipment,
> not to an image.
> You can have the same image with 3600 pix at 72dpi with 300
> pix at 1200 dpi, the better one
> for printing is still the first one, never mind the resolution.
>
> So you should only care the size of the image, forget the resolution.
>
>
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