Digital BW, The Print

I must admit I find this subject of perceived/observed colouration in a
greyscale comprising colour dots rather interesting and, at times, amusing.
With regard to the former, Clayton (for one) is claiming that he can readily
sense the use of colour dots in the greyscale even when these individual
dots are not observable at 6x magnification at a distance of 2 inches.  I am
not suggesting that he can't, merely that I am sure this would make
interesting fodder for those who scientifically study colour and human
vision.  I am sure that such people could construct some appropriate
rigorous tests.  

On the 4th of August coovert1912 posted a rather interesting example of how
readily the eye can be fooled.  I would find it rather remarkable that
objective tests would show that the eye can perceive the presence of colour
dots in a 2880dpi image at even less than normal viewing distance while at
the same time dealing with all the other factors it must deal with,
including white point adjustment, relative/local contrast and other
extraneous viewing factors such as the colour of other objects within the
field of view.


> From: Tyler Boley <tyler@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Sat, 06 Aug 2005 05:07:21 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] K7 coverage was Re: 2400 B&W And Coloration
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Clayton Jones" <cj@c...>
> wrote:
> snip...
>> Are they more opaque than other pigment sets?  I think of opaqueness
>> as being caused by full coverage of the paper, where BO get's it
>> luminance/translucence from allowing bare paper to show...are you
>> thinking of something different?
> 
> No, we're talking about the same thing, and it's an interesting issue to me. I
> think the whole 
> concept of multiple density K inks and partitioning them to their apropriate
> part of the tonal
> scale is pretty much the antithesis of what you like about BO printing <G>.
> Yes, a LOT of covereage. The more partitions and inks you add, the higher the
> dot count 
> everywhere, in all parts of the scale.
> So, if we allow the probablity of coverage or the lack of it being responsible
> for the 
> luminousity you prefer in BO prints, then K7, with more coverage than ever
> before, may just 
> be the least interesting development in mono inkjet printing for you yet!
> I think it will be very interesting to hear what you think of how they look.
> Tyler