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Digital BW, The Print

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Re: [Digital BW] Comparison of Ultrachrome K3 Advanced B&W and Cone Neutral K7 I

2007-01-13 by John Hollenberg

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark"
<paul.roark@...> wrote:
>
> There is excess color in the K3 ABW mode print that will affect fade
> resistance.  Have you tried taking the prints under differing 
> lighting to compare metamerism? 

Paul,

Just tried under a couple of different fluorescent lights and still
couldn't tell the difference.  I thought I knew which one was changing
slightly, but that turned out to be the K7 print.  Too close to call.
The difference in fade resistance is a significant point that one
can't see in this visual comparison.

Looking at prints further under a loupe, the K7 print is definitely
smoother in the transitions.  However, while I can almost convince
myself that I can see the difference in smoothness of an abrupt
light/dark transition from 8 inches away, probably I would only get
about 50% right if the test was done "blindly".

Thanks.

--John

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