you friend would be correct IF sane used a file format which allowed the storage of the dpi, or exposed this data through some external means. but, as i said before, sane does not. so, you are going to see a stretched image.
allan On 2/14/08, Gernot Hassenpflug <aikishugyo at gmail.com> wrote: > I cannot find the thread where this was discussed before, but here the > answer I received from a friend of mine, hopefully it will be useful > to clear up the confusion surrounding the resolution of scanners! > > - The lower figure (1200) is what is called True DPI. This is the more > important value. It stands for the density of the aligned sensors (the > more you have the better quality the scan output. This figure > represents the horizontal scanned resolution. > > - The higher figure (2400) stands for the vertical scanned resolution > and it is the steps the sensors are moving (vertically) in an inch. > > -> You confuse the out put which is square inch and therefore always > has the same horizontal and vertical figures. > > I hope that helps, > Gernot Hassenpflug > > > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > to sane-devel-request at lists.alioth.debian.org > -- "The truth is an offense, but not a sin"
