Digital BW, The Print

Thanks Tyler. I've been wondering lately if my measurement approach and/or
spectro are off, hence my question.

I have started working with Cone K7 Selenium lately, in combination with a
few papers, and I've noticed some interesting things. Cone Type 5 (gloss)
renders quite a warm toned print. Harman FB AL cools the image some, but
there is still an underlying warmth to it. Canson BFK Rives and Rag
Photographique conversely, produce a beautiful "charcoal" look, at least to
my eye. I find it interesting that the Harman, which has a cool base,
renders a warmer image than BFK Rives or Rag Photographique, both of which
are warmer papers. Perhaps the coating, as you've suggested, is the
differentiator.

Terry.


On 21/03/10 12:41 PM, "tboleyyh" <tyler@...> wrote:

> 
> 
> Terry, were I to want more critical accurate representation of each paper I
> would have done this differently. For now I was only interested in comparative
> information, so I can eliminate further investigation of papers that this test
> revealed as less interesting. That's why the two commonly used papers, HPR and
> GE, are included.
> So an intern did these measurements quickly, with no multiples averaging, on a
> light wood table with one layer of budget white gloss inkjet paper over that.
> An EyeOne non-UV Pro was used. I'd love to devote a week to sorting some of
> this out, but as it is I get to it in fits and starts, and I have to narrow
> the activity to the papers of interest here, but I'll share what I discover.
> Sample packs of both the Epson Signature Series and the Cansons are available.
> If any of this sparks interest so far, I'd suggest getting some. Right now
> Alise seems to be back ordered everywhere.
> The evolving coating technology is of interest to me. Not only with regard to
> the subjective beauty of the resulting prints, the dmax and ink receptive
> qualities such as dot sharpness and total ink capability, and linearizing
> preformance, but in terms of longevity. Mark McCormick-Goodhart once told me
> that the fact that different coatings create different hues with mono ink
> should be a major clue that something delicate, and potentially problematic,
> is happening chemically at that bond. Of course physical delicacy is the other
> major issue, I've had far too many rejects this last year, so tough new
> coatings are a priority for me.
> Anyway, for a more strict representation of the paper, I'd trust your
> measurement for the Canson, mine are to compare with the others done at the
> same time.
> Tyler
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Terry Ritz <t.ritz@...>
> wrote:
>> 
>> This is really interesting Tyler.
>> 
>> How are you measuring the paper base? I get 97.71 1.46 -0.36 when I measure
>> Canson Rag Photographique with my ColorVision Spectro Colorimiter. That's
>> using two blank sheets and than a black surface, under the page I'm
>> measuring.
>> 
>> Terry.
>> 
>> 
>> On 20/03/10 6:54 PM, "tboleyyh" <tyler@...> wrote:
>> 
>>> Canson Rag Photographique 310-
>>> White LAB= 98.93 0.03 1.16
>>> 50% AB= 1.34 5.78
>>> Dmax= 1.741