Err...
Nope. Once you've downsampled an image to 72ppi that's it - you've lost the original detail. You can re-sample at 300ppi or whatever you want, but it'll look identical. Sharpening'll just create unpleasant artifacts.
Best advice - back up the master images. Sorry not to be more help.
( ,
Thu 9 Nov 2006, 17:48,
archived)
Best advice - back up the master images. Sorry not to be more help.