Digital BW, The Print

Yes.  I find it easier to think in a perceptually uniform scale:  CIELab.
The difference noted below is about 2.5 L* which is quite visually
significant.  But take a look for yourself in PS on a well-profiled monitor.


> From: Brian Ellis <bellis60@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Fri, 10 Feb 2006 20:13:36 -0500
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: Re: [Digital BW] Re: epson velvet fine art paper
> 
> "With the K3 inks that I use, the VFA is the standout for dmax both
> visually and by measurement.  The VFA not only shows a much better
> dmax with the K3's than the EEM (roughly 1.79 vs. 1.70. . . "
> 
> That's a difference of less than a third of a stop. Does it really look
> "much better?" The difference between the first and second steps in a 21
> step wedge is .15 log units (half a stop) and that difference is  barely
> visible even with the side-by-side comparison of a step wedge. I wouldn't
> have expected a .09 difference to be noticeable at all in a print. I'm not
> arguing with you, if you see a difference of less than a third of a stop as
> "much better"then that's what you see. I'm just surprised that such a small
> measured difference would be so visible.