[Tool] ChromIQ – a macOS and Windows GUI for ArgyllCMS printer profiling (v3.0.0 beta 10)

[Alan G]

One reason for more patches, is the size of the print. If one is only printing letter or A4 prints, it more difficult to see color transitions unless you are using a loupe. However, when you move to larger prints color gradations are more important. I have done some office installations with 13 x 19 and 17 x 22 inch prints and an excellent profile is a necessity.

 

[itsab1989]

@Alan G
May I ask why you are seemingly creating so many profiles on a regular basis (you mentioned that you have already created 5 with my app)?
I mean I want to improve this app to a point at which it is a real help for beginners and experts. But to be honest I will then probably not very often use it myself. My printing habits are pretty boring - same printer and two types of paper - not much experimentation.
Pharmacist told me he is mixing his own custom inks and I assume that why he needs profiling pretty oftern. I was just wondering whats your reason for it.

 

[pharmacist]

The TC9.18 target is often used by commercial profile companies as the standard target of choice, because it uses an RGB sampling of 9x9x9 and very importantly a good sampling of the near neutrals around the neutral axis. Normally it is often difficult to establish the neutral axis with perfectly neutral greys only, you will need stained grey ramps in several color area's (RGB + CMY) so the software can cube-fit the nearest possible point using these stained greys.
By strengthening the sampling count around this near neutral area with the extended gray target of Spyderprint you can get optimal results without the need of a 2 step method: first with standard target to determine where the exact neutral axis is for your printer/paper/ink combination and a second one to optimize and smoothen the first readings to obtain a final optimized target.

It is for most people more than enough, however if you want really accurate profiles you will need more measurement points and range of RGB= 10x10x10 or even higher like 12x12x12, but for the human eyes the most important area is the area around the neutral axis for which the human eye is the most sensitive for color casts, so taking more sampling points in this critical area is more beneficial than more points in the rest of the color cube for a given patch count.

I just finished printing my special ChromeIQ Colormunki/i1Studio scanning jig:

It is for Landscape scanning of A4/Letter and can be easily printed on a standard 3D printer and is light and sturdy.

If interested I can upload the stl-file.

 

[itsab1989]

Nice! You even added the name on it! The „e“ is extra though

 

[pharmacist]

Oh that is just a cosmetic fault, Can be easily corrected