> > > Hold on - thanks to you all, maybe I DO understand this. If scanned > > > at 72 dpi, even a 4x6 print would need quite a bit of interpolation to > > > get it up to a good screen size, ergo crap. Is that correct? > > > > No, not interpolation. Interpolation ADDS data. Decimation > removes data, > > so scanning at 72dpi would remove data...if your scanner is > 2700DPI and you > > scan at 72DPI, you are only using 1 for every 37.5 pixels! > > Yeah, but when you finally knock i down to 72 dpi, you're going > to discard all that info anyway.
Not necessarily. That is why, in your next post, one method (scanner) may be better than the other (PS), and vice versa. A decent decimation algorithm will use ALL the data via some algorithm to give you one point for 35 values...point is, the data IS used, not just thrown out.
