My Canon PRO-10 on refill ink - and what happened to my PRO-9500II

[Artur5]

Inkjet printers, at least the semi-pro models we’re talking about, are far from reaching AdobeRGB space. See below a screen cap comparing my custom profile for Pro10-OEM ink-Epson luster paper (outlined in blue) and AdobeRGB (in red )
Even if the printer surpasses slightly Adobe in the cyan-blue and yellow-orange areas, the advantage of AdobeRGB in the greens is huge and it’s also significant in the blue-magenta-red area.
In the second screen cap outlined in blue the same custom profile for Pro10s-OEM ink vs sRGB (in red). Here the results are much more even. The printer can reproduce wide areas out of the sRGB space and vice versa.

 

[palombian]

It’s ironic you choose that test balls, because from what I can gather, this file can not be reproduced correctly by any inkjet printer, because it’s a no win digital image.

Do you have a more suitable test chart ?
The one with the strawberries lacks good photos to judge green and blue.

 

[Ink stained Fingers]

If you are looking for a test image with all colors possible - here is one as attached - with all 16 xxx xxx (million) RGB colors with RGB 8 bit, it'll display as an sRGB image since a profile is not embedded, and it depends on your graphics program to convert/open it in AdobeRGB instead.
If you want to know everything about the sRGB color space you may read this posting
www.ninedegreesbelow.com/photography/srgb-profile-comparison.html but don't get confused that there is more than one sRGB color space, actually plenty, and if you are over it you may continue with the other articles about color spaces
www.ninedegreesbelow.com/photography/embedded-color-space-information.html and/or
www.ninedegreesbelow.com/photography/articles.html and/or
www.ninedegreesbelow.com/photography/srgb-today.html or some info about painting on a computer
in section H of the articles index Articles on painting, photography, and combining painting with photography.
( I think I need to find out how those digital paints are actually drying - how long they take, whether they change hue and saturation...........)

 

[The Hat]

Try these…Or you can find some great ones on Druckerchannel.de, Ink stained Fingers can show you where to look if the language becomes a problem..
click to enlarge

 

[PeterBJ]

The druckerchannel.de test pictures and documents are here, and here is a Google translation to English.

 

[The Hat]

The druckerchannel.de test pictures and documents are here, and here is a Google translation to English.

Way to go @PeterBJ…thanks you...

 

[Ink stained Fingers]

Here is a test image in the zip file which gives you a quick status of your monitor whether it can do sRGB or more,
the image has vertical bars - mostly hidden - in the blue background - color variations which are outside of the sRGB color space and thus not visible on lots of monitors, you most likely won't see those bars in image 1, if you see them in image 2 your monitor is capable to display colors beyond sRGB , if you see those bars only in image 3 your monitor is capable of sRGB but not at all of Adobe RGB, and if you don't see the vertical bars in any of these images your monitor - or display is not very well suited for photo editing at all. You can open this .tif file in a photo editor and reduce the overall color saturation, and you'll see the vertical bars showing up, pulling them into the displayable color range . This test file has an eciRGB profile assigned which is wider than sRGB but independent from AdobeRGB, this eciRGB profile is an alternate wide gamut profile used as well in the commercial printing environment, and not linked to any company or restricted by licenses etc.


You can find here quite some interesting information about gamuts, color space conversions and a lot more tutorials
about printing and color management.

www.cambridgeincolour.com/tutorials/color-space-conversion.htm

Be aware that the druckerchannel test images, those which I checked, all have an sRGB color space assigned, they
thus won't give you colors beyond that for testing.

 

[PeterBJ]

The dc_grafiktest.pdf test file once had me think a print head had started banding. But don't be fooled by that image, the "bands" are actually part of the stairway image in the lower right corner. I wonder if someone at the Druckerchannel staff had some fun composing that test image? Here is a crop showing the "banding":

 

[stratman]

quick status of your monitor whether it can do sRGB or more,
the image has vertical bars - mostly hidden - in the blue background - color variations

Your test of monitor capability is also dependent on the application viewing the image. The standard Windows Photo Viewer did not show the vertical bands but Windows Paint did in all three images on my Dell 2408WFP monitor, an oldie but a goodie.

 

[Ink stained Fingers]

Your test of monitor capability is also dependent on the application viewing the image.

Yes, you are right, that's an important comment, the application displaying the image must be color space aware in the first place for this test, or it does not recognize and cannot handle the embedded profile - eciRGB in this case, and would not correctly display images with other non-sRGB profiles - like AdobeRGB - either. Some editors and viewers just go for sRGB since this is the most popular color space. This test does not tell you if your monitor covers the full Adobe/eciRGB space since it just covers the blue range but gives already a hint that your monitor can do more than sRGB.

When you do a color separation of the test image and look to the red channel you see that the vertical bars and their intensity are clearly visible, but the combined RGB color is out of the sRGB color range.