Glen Berry wrote:
> >IMHO the DPI value is not a property of the image, but
> >of the printing process, hardware, requested paper size
> >etc. Passing the information the other way around
> >is IMHO more useful (e.g. the printer tells the renderer
> >how many pixels the image should have in order to fit
> >on a given sheet with minimal dithering trouble).
> >
> 
> If by "printer" you mean a person working at a service bureau, you
> will be sorely disappointed to learn (as I was) that the *vast*
> majority of these individuals can't think in terms of pixels. They
> only think in terms of DPI. The number of pixels in an image is nearly
> irrelevant to many of them.

Yes.  I always have to import a bitmap into CorelDraw so that i can
assign it a DPI higher than 75.  It's the only way i know to get
decent printing.

> >
> >Modern bitmap formats (at least PNG) support comments,
> 
> Many graphics programs insert information in the images they produce.
> Things like headers for copyright, the name of the software used for

Either Povwin 3.0 or Povlinux 3.0 (but not both :) outputs a copyright
into TGA.  That threw me off for a bit because generated animation
frames would come out different sizes.


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