Digital BW, The Print

On 06/01/2012 04:32 PM, Terry Ritz wrote:
> On 12-06-01 1:33 AM, "Ernst Dinkla" <e.dinkla@...
> <mailto:e.dinkla%40onsneteindhoven.nl>> wrote:
>
>  > There is another way to get the Lab b on a zigzag course. Measure a
>  > target with heavy bronzing and the 45/0 degree reflection optics in a
>  > spectrometer are affected by the bronzing layers. The measured color is
>  > not 1:1 to what the eye sees in color of the bronzing but that is
>  > understandable given the spectrocam's light source and sensor as another
>  > light + another observer. In practice one would not select a B&W
>  > paper/ink combination that creates that much bronzing but in color
>  > printing it may be less obvious and play a role when colors are off
>  > after profiling. Grey range in color prints for example. I will put some
>  > QTR linearisation plots on my site to show the difference between a
>  > target with and without bronzing.
>
> Not that's very interesting, and something well worth keeping in mind.
>
> Would L* values suffer in this circumstance?
>
> Terry.


Hardly I think. The 21 B&W step range is as good as the one that has no 
bronzing. Same paper, different inkset.


-- 
Met vriendelijke groet, Ernst

Dinkla Grafische Techniek
Quad, pi\ufffdzografie, gicl\ufffde
www.pigment-print.com