More info when I get some tests printed.
~Kalin
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Wow! This paper looks great! I don't have any Silver Gelatin experience to compare to but on it's own it's wonderful.
Here's a little more info from an initial test on the iPF5000.
I printed Atkinson 1452 targets on two letter sheets using both the 'Photo Paper Plus' and 'Photo Paper Plus Semi-gloss' media types. Inspecting the profiles in the windows color tool indicates that the 'Photo Paper Plus' variant is slightly larger in volume than the semi-gloss profile. However, using the [a href=\"http://www.outbackprint.com/printinginsights/pi049/essay.html]DOP Printer Evaluation Image[/url] I see no difference in the images made with these two profiles.
Using the DOP image, under a 5000K lamp, I can discern black differences to level 4 and white differences to 252, almost 253. Very wide dynamic range.
I'm also evaluating Crane Museo Silver Rag. Comparing the test image on both papers, the teardrop arch image shows more contrast and richer tones on the Harman paper. The strawberries are also a deeper tone but not over-saturated on the Harman. On the Harman the lava looks sharper with smoother gradations (very slight) but this may be due more to the texture differences. The texture of the Harman paper is very slight, much less noticeable than the Silver Rag - which may ot may not meet your aesthetic tastes. Overall, the blacks are slightly deeper on the Harman paper which yields better contrast ranges in various parts of the test image.
As I was printing the test image, I softproofed using the Harman photo paper plus profile. I was surprised to see that turning 'simulate paper white' on/off had little effect on the preview. I actually had to toggle it a few times to see that it was having any effect. The color shift under soft proofing was more substantial but in line with what you would expect. The soft proofed image on monitor was nearly identical to the print under a 5000K lamp. That is cool!
These are just some initial impressions from a single test image. I still need to print some of my images to compare.
John, if you're interested in a more in depth look at these profiles, let me know.
~Kalin