Digital BW, The Print

My points were more in relation to the printer having its own "space" and
unless a conversion is done from the workspace to the printer space then
issues will arise because the two are different and you have not invoked a
policy for the transformation.


> From: John Moody <moodymz3@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Tue, 22 Nov 2005 06:42:15 -0500
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: RE: [Digital BW] GG 2.2 vs. DG 20 (Was Comparison: K3 versus
> Ultrachrome)
> 
> Yes, if profiles were based on floating-point numbers rather than integers,
> colorspace would not matter, but they are, so one needs to be careful of
> what happens in the conversion process.  You point out we need higher
> bit-depth graphics cards and monitors to take advantage of the wider gamuts
> the current printers have; I believe this will be part of the next
> significant advance in digital imaging and printing.
> 
> With a good printer, inks, "driver", etc., all 256 grayscale steps are
> resolvable.  I use the quoted term "driver" to encompass any RIP, or print
> driver on any OS.  From my own observations, side-by-side patches are
> resolvable by eye as well as instrument.  Since that is the case, shouldn't
> the master file be in the space that most closely represents human
> perception, i.e. QTR space?  For someone with software and computing
> resources that allow entire file treatment at 16-bit, it becomes less of an
> issue, but the fundamental issue is still there.
> 
> One way to explore such issues is to create a 16-bit gray gradient at least
> 3600 pixels wide, and print it at least 10 inches long by about 0.5 inch
> tall, using different "drivers", profiles etc.   Such an image will be large
> enough to reduce the effect of "driver" dither, and allow you to see how
> smooth a particular combination of hardware and software render the levels,
> which is limited to 256 for at least some, if not all of the "drivers".
> What I have seen in my own trials has been enlightening, and allowed tuning
> the process to produce smoother results, that result in better printed
> images.
> 
> Best regards,
> John Moody
> 
> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com]On Behalf Of Steve Kale
> Sent: Tuesday, November 22, 2005 5:30 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] GG 2.2 vs. DG 20 (Was Comparison: K3 versus
> Ultrachrome)
> 
> The thing is it doesn't matter which space you work in if you use colour
> management to manage the translation. (I'm talking the greyscale case here.
> There are many other issues when we move to a colour world.)  In this case
> it doesn't matter if you work in GG2.2, Gray Lab or DG20.
> 
> <snip>
> 
> 
>