I don't think my profile is better than the canned profile?

[Doug Gray]

ICC Profile Inspector, a free utility downloadable from color.org.

Richard Southworth

Very good tool. One can examine the structure and components of a profile's details. LUT tables, pre/post conditioning curves, PCS (Lab or XYZ), RGB profile details. Pretty much anything in the profile.

[kers]

Not all canned ICC profiles are equal...

I just took the time to see some of your videos; very helpful !
also the page on 'Black point compensation'.
so thanks!
I also downloaded the calibration print.
What i still do not understand is that i get so many different values of this colorchecker classic card? (24 colors)
The values from different sources as the one on your target and my own are always slightly different. ( and i use the same colorspace)

[digitaldog]

What i still do not understand is that i get so many different values of this colorchecker classic card? (24 colors)
The values from different sources as the one on your target and my own are always slightly different. ( and i use the same colorspace)

Lab values?

[kers]

Lab values?

I will look into that; so you say it might be the color engine that plays up...?

[digitaldog]

I will look into that; so you say it might be the color engine that plays up...?

The RGB values depend on the RGB color space. Not the case with Lab values (they are device independent). Not that you should expect a prefect match to a reference anyway:
http://www.babelcolor.com/index_htm_files/RGB%20Coordinates%20of%20the%20Macbeth%20ColorChecker.pdf

[PeterAit]

Hello,

Much apologies for my first time post (long time lurker) but I can't seem to find the answer I'm looking for

Epson SC P800, Hahnemule Photo Rag 308, Benq SW2700,

When I profile my own paper using the i1Pro 2 and i1Profiler and 2531 targets (sorry if the number is wrong, going on memory) I don't seem to get any better result than the canned profile

And why should you? The paper manufacturers have highly experienced technicians, top-end equipment, and a lot of motivation to provide highest quality profiles to help boost the reputation of their paper. Of course not every canned profile is ideal, but I have used nothing but for years with great results. But of course, if someone puts a lot of effort and expense into making a custom profile, they will almost always tend to see it as better (psych 101).

[digitaldog]

And why should you? The paper manufacturers have highly experienced technicians, top-end equipment, and a lot of motivation to provide highest quality profiles to help boost the reputation of their paper.

Again no: "All generalizations are false, including this one".-Mark Twain
Further, my video shows (Reply #10) that this isn't the case with one manufacturer (of papers and printers) in some cases, better in others (because they are using a very good off the shelf product to do so).
Again, not all ICC profiles are created equally. Even from the same manufacturer.