Digital BW, The Print

Ok I got some Canson Rag Photographique (CRP), hoping it would be whiter
than HPR, and give me a somewhat different look -  but it does neither.

Here is some real data (I wish all manufacturers would publish this info).

Canson Lab paper white    97.69 0.15 0.89
HPR Lab paper white
   97.53 0.63 0.01

Canson is bit smoother and a tiny bit yellower as the 'b' measure shows.

Profiling with K7 standard inks it gives a truely linear density curve with
the HPR K7 Cone curve for my R1900 printer. As straight as the HPR one is.
They both achieve L17 dmax (approx 1.64). In fact if it wasn't for the 'ab'
difference at the paper white end of the curve I would have been worried I'd
somehow printed on HPR by mistake.  Below about L60 their 'ab' curves using
Neutral/Sepia split are basically identical.

I've printed a couple of prints on CRP and I can't tell them apart from HPR.
So at least for some inks I would say HPR and CRP are totally
interchangeable - except in price here in UK where as I mentioned before CRP
is 30 - 50% more expensive.

As I try the paper with other inks I'll provide an update.

Mike





2009/7/18 Patrick Carr <patcarr@...>

>
>
> Terry Ritz wrote:
> >
> >
> > I really like Canson Rag Photographique, which is similar to HPR.
> > Photographique is the sharpest matte paper I've ever used. I'm getting a
> > Dmax of 1.63 with a custom Cone curve and K7 Special Edition inks. The
> paper
> > has a nice weight and is reasonably priced.
> >
> > I'm also using Canson BFK Rives. It is slightly warmer, and has a very
> nice,
> > yet subtle, texture. Dmax with Cone curve and K7 is 1.59.
> >
> > Canson also makes an etching paper, along with a number of other textured
> > offerings.
> >
> > Terry.
> >
>
> I've also started using Photographique--a beautiful paper, but I'm not
> seeing the similarity to HPR. To my eye Photographique is much whiter
> (no OBAs) and a bit softer . . . I'm using the K7 SE too. Guess I'll
> look into purchasing a custom curve.
>
> Yes, their other papers are also quite nice but very expensive.
>
> Patrick Carr
> --
> Carr Imaging
>
>  
>


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