Re: Scan resolution requirements for postcards

[Denton Taylor <denton@xxxxxxxx>]

>>People told me that the best print resolution was 150 to 
200 lpi and the relation of dpi to lpi was about 2 dpi = 1 lpi,  which means
that a resoltion of 400 dpi should be adequate.  This can readily be done on a
flatbed scanner working on the real size photo and the digital file would be
about 20 MB in size.  >>

The highest lpi you will probably be using is 133. Therefore a scan at 300dpi
is more than adequate.

Since you cannot handle very large files, instead of printing 8x10s for flatbed
scan you should print about the actual size of the postcard. This way you are
not scanning information you will be discarding anyway when you size the photo.

The quality you will get may depend on the subject. By creating a print, you
are already going thru an additional step. If the neg or slide has a huge range
of contrast, you are better off drum scanning the original. If the range is
relatively low, a home scan should do.



________________________________
Regards,
Denton Taylor

Photogallery at www.dentontaylor.com.
Panoramas and Immersive Imaging at
	www.threehundredsixty.com