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 on: Today at 05:40:39 pm 
Started by Simmons - Last post by MichaelKoerner
paper does have grain. If you try and fold it across the grain, it will tend to give you an ugly crack. Turn it 90 degrees, and you will see the fold comes out quite smooth.


The technical term is machine direction, I guess. You can
identify it's direction by bending a square (!) piece of your paper in both directions. You will notice that in one direction it bends more easily - this indicates the direction you should use for creasing/bending.

In many cases, machine direction goes with the long side of a paper. Since you are printing leporellos (loooong prints ;-) I guess you a creasing/bending perpendicular to the long side. So John could be dead-on.

On the other hand, inkjet coatings make paper surfaces kind of brittle (I see that effect when cutting coated matte papers like FineArt Velvet from the back side). So perhaps lamination is the way to go, no matter how you grease/bend. In this case you'd better use some glossy RC paper (or the like) with smooth surface - no advantage in using Rag Photographique here.

 on: Today at 05:30:11 pm 
Started by dsapkota - Last post by Chris Kern
I have been using this site for many years but it is my first post in this forum. . . .
I took this picture recently during my Trekking of Annapurna Base Camp in Nepal.

That's certainly a great start for a first post!

(I agree with the suggestion about the watermark, though: maybe relocate it to the lower right-hand corner?  You might also consider reducing its opacity to 50 percent so as not to draw the viewer's eye to it.)

 on: Today at 05:26:19 pm 
Started by mseawell - Last post by Leszek Piotrowski
Yes,.. your image brought back to me some my precious moments!

I felt the same way,... walking up over the snow crest hardwood rise,... and seeing
Lake Superior,... below ,...  it was Jan 1998 or so.

my Lake Superior wonders,....

thank you. ,...

 on: Today at 04:53:38 pm 
Started by Bob_B - Last post by Bob_B
Gentlemen: Thank you for your kind words.

 on: Today at 04:46:29 pm 
Started by Doug Gray - Last post by arobinson7547
Your research sure highlights the need to recalibrate back to 'some' / 'any' kind of reference. That's one of the advantages of a CMYK rips. But even the calibration routines in slightly newer machine (I know that on the Canon side the 8400 range had the ability to recalibrate BACK to the condition the Printer was in, hopefully before you profiled.

Thanks for the insight.

 on: Today at 04:19:08 pm 
Started by Doug Gray - Last post by Doug Gray
Over the past 5 years or so I've experimented with various patch set configurations to determine what sets worked best with my 3 printers, 9500 II, Pro1000, and Epson9800. I used an i1isis 2 XL with page US letter 8.5x11" pages.

I've found a few printer anomalies. The 9500II patch color shifts a bit depending on the patches printed to either side. For instance a dark color tends to become darker/more saturated if the adjacent patches were similar. The Pro1000 tends to print differently on the first page than subsequent pages if it hasn't printed in a while. The biggest differences are after a time delay of a week but there are significant differences even after a few hours. The 9800 was the most stable but showed gradual shifts as the cartridges aged and ink levels decreased over a year. Likely due to gradual evaporation and ink density increase through the breather tubes. Still, remarkably stable. Even though the 9800 was most stable, the profiles needed to be somewhat larger for similar accuracy due to the printer's more lumpy RGB response. Especially on the neutral axis.

However, by creating a tool that combined patch sets, randomized them, and added extra patches to each page to detect page to page printer changes I was able to get good, consistent results and came up with quite good patch sets.

For smaller size patch sets (<1500 or so), embedding an inner grid produced much better profiles. As an example, an inner grid 4x4x4 inside an outter (main) grid of (5x5x5) produces 189 total patches and a side benefit is that the spacing between neutrals (R=G=B) is halved.

However, the advantage this has decreases gradually and at over about 1500 total patches disappears and the conventional, single grid performs as well or even better for larger patch counts.

For each of these approaches I also found a large improvement in neutral and near neutral color accuracy by adding a series of near neutrals RGB values. The main reason is that DeltaE 2000 is much more sensitive to small colors changes along the neutrals so extra patches significantly improves prints that have large areas of low/no saturation color.

I made large set of the RGB patches, both with inner grid and only the standard grid but all with extra near neutrals. The ones with the inner grid are labeled optN.txt where N is the total patch count and linN.txt for patches that only use the standard, outer grid. Also, scrambled versions are also provided. They have the exact same RGB patches but are randomized to reduce regional color shifts such as occur on my 9500II. These have a file name ending in 'x'. I prefer the scrambled but the unscrambled ones are easier to visually identify gross print errors such as selecting the wrong paper type.

Attached is a zip file containing these.

 on: Today at 04:02:13 pm 
Started by Bob_B - Last post by Rajan Parrikar
Excellent series. The final of the set is wonderful.

 on: Today at 03:39:26 pm 
Started by Bob_B - Last post by Mark Nadler
I love the slightly abstract quality of your last image. 


 on: Today at 03:04:05 pm 
Started by Simmons - Last post by reggisnienaber
A high-quality lamination film must contain >50% PET. Such a film is more elastic and protects the picture better. Buying a cheap movie from an unknown manufacturer, you may encounter a film in which an EVA adhesive layer prevails. The low price is achieved due to the manufacturer's savings on raw materials.

 on: Today at 02:44:27 pm 
Started by Jeremy Roussak - Last post by Chris Kern
I'm by no means an expert on American politics, so I probably shouldn't comment on Trump. However, I've read a few times that Trump advised Germany, about 4 years ago, that it shouldn't rely upon Russian gas supplies. He was right about that.  ;)

The United States has advised Germany since the administration of President Ronald Reagan that Russian gas pipelines would serve as a source of political leverage that could be used to undermine the national interests and international commitments of European governments.

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