Re: iPF5000 16 Bit Printing At Last?

If one were to follow your logic then all progressive technical development
of print technology would stop.

As I use a 16 bit digital camera I would certainly like to be able to print
on a 16 bit printer and I would expect to be able to see the difference
between an 8bit image printed on an 8 bit printer and a 16 bit print from a
16 bit image.

The same argument is often advanced for restricting the pixel count on a CCD
or CMOS chip and I find myself equally unable to accept the presumed
restriction on development in that area.

In any case, and whatever the arguments, the pro's will buy and use and will
not go back to an 8 bit print technology whatever the arguments put forward
suggesting things should be otherwise.

Richard

----- Original Message -----
From: "Yves Gauvreau" <gauvreau-yves@sympatico.ca>
To: <alt-photo-process-l@usask.ca>
Sent: Wednesday, May 10, 2006 5:16 PM
Subject: Re: iPF5000 16 Bit Printing At Last?

> Michael,
>
> first, just as I learned that our eyes couldn't distinguish tonality
> difference of less then 1% (on average) which mean having as high as 256
> or
> 0.4% distinct tonal values printed should be more then enough to give the
> appearance of continuous tonality gradation and an increase to 65000
> distinct tones wouldn't change any of this
>
> I wouldn't be surprised to find out that an 8 bit color printer is plenty
> enough considering our eyes color discrimination capabilities. Epson
> claims
> there printer can put as low as 4 pico liter of ink. Do you have an idea
> of
> what this means, all I can say is you would need very precice lab
> equipment
> to verify this. Now to be a true 48 bit color printer would require 16
> million (2^24) times more color resolution capabalities then what is
> currently available. If we bring this back to individual color or ink,
> this
> mean only 256 times more precice control of the ink spray or 1/64 pico
> liter
> Just in case you didn't know, that is

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