Digital BW, The Print

On Mon, Feb 10, 2003 at 07:37:50PM -0500, Austin Franklin wrote:
> What happens when you resample the image to accommodate some mythical PPI to
> the printer is you degrade the image.  The printer dithering algorithm is
> going to already resample the image simply to convert it to printer dots,
> that's what dithering algorithms do.  Resampling the image yet another time,
> as I said, degrades it.
> 

I know little about these things but is it not possible that the printer
driver resamples an image to a specific resolution before performing its own
conversion to CMYK (or whatever inks it is using)? In such an instance is it
not also possible that if one presents an image to the printer driver
already at that dpi then that resampling does not have to be done?

Given the choice of supplying my own resampled image to the printer driver
and knowing the driver will not resample further or given the choice of
supplying the image to the printer driver at an arbitrary dpi and having
the driver resample using an unknown algorithm I would certainly opt for the
former.

Tony

> 
> >
> > If you have the 2200 Grey Balancer and have a look at the included
> > test files that print beautifully, you will see that their
> > resolution is 240dpi. That is what I tend to use now, if it's good
> > enough for Epson then it's good enough for me!
> >
> > Barry
> >
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Austin
> > Franklin" <darkroom@i...> wrote:
> > > > A friend attended an Epson printing seminar over the weekend. One
> > > > piece of most interesting information that he brought back is
> > that
> > > > there Is an optimal recommended printing setting : 360 DPI - a
> > > > submultiple of 720/1440/2880. I always expected that but never
> > ran any
> > > > tests to confirm it.
> > >
> > > Yeah, but it's not true, and has been proven beyond a shadow of a
> > doubt to
> > > be not true many many times.
> > >
> > > Who gave the seminar?  Could you find out?  I'd like to discuss
> > this with
> > > them ;-)
> > >
> > > Austin
> >
> >

-- 
Tony Terlecki
ajt@...
Running Debian/GNU 3.0 Linux