"Kenneth" <kdw### [at] gmailcom> wrote:
> it
> actually does state that the image already has a resolution of '180 dpi.' I had
> always assumed this to be an actual 'embedded' resolution. Or is it simply
> *metadata* that my particular camera has written to the file-- without any real
> practical meaning? (With the exception being, how LARGE the image initially
> appears in a particular image viewing/editing app like Photoshop, which has a
> default resolution of 72 dpi... the size depending on the MONITOR'S own
> resolution, of course.)
>
> Although 'resolution' of an image may not be of practical concern most of the
> time, it does have some importance.

DPI is always just metadata in a bitmapped pixel image. It has no meaning for a
pixel. I suppose someone at Canon added it to some EXIF metadata block in order
to just get customers off their back :-) The 180 (or any other value for that
matter) certainly has no meaning for a photo camera...

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