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"Kenneth" <kdw### [at] gmail com> wrote:
> That's an interesting question. Which I don't know the answer to :-P
>
> But I work around it in Photoshop: If I need to change an image's DPI, for
> printing or whatever, I just go into IMAGE/IMAGE SIZE and fiddle with the
> resolution there, then re-save it. (If the image is PNG, that's a lossless
> re-save, quality-wise; but if JPEG, then a 2nd compression quality-loss is
> incurred... which I usually live with.)
>
> That said, it would be nice to be able to specify a DPI setting in POV-Ray.
You do realise that it is pointless to add some arbitrary number to an image
file? Apart from the fact that misc image formats, JPEG included, don't have a
standard DPI flag? - It isn't surprising either, as there is absolutely no use
for it ... I might also add that this discussion comes up every few years. So
maybe search the newsgroups for the many answers in that regard.
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