Re: Turn off color management!
Re: Turn off color management!
- Subject: Re: Turn off color management!
- From: Ben Goren <email@hidden>
- Date: Sat, 06 Feb 2016 15:38:27 -0700
On Feb 5, 2016, at 7:06 PM, Graeme Gill <email@hidden> wrote:
> In theory if you tag the images with the printer profile, and that printer profile
> is registered as the one for the device, ColorSync should notice and do a "null
> transform”.
In this particular instance, that seems to be the solution. At least, I just went from start to finish, chart to profile to print, and FINALLY! was able to get a good match. In this case, a ColorChecker Passport that, even when printed on Canon’s moderately OBA-rich Heavyweight Coated paper, is a perfect side-by-side match with the actual Passport. How Argyll is able to do that is beyond me, but I’m getting quite used to such astonishment.
The same workflow, when with the official way (Vendor Matching => no color correction), consistently yields simply miserable color shifts.
For the sake of the archives, I downloaded the QuadTone PrintTool, but didn’t try it since Vendor Matching wasn’t an option in its dialog box, even after I added it to the magic XML file. Maybe somebody else will have luck that route, but, since I’ve got an answer, I’m not worrying about it any further.
> But that's assuming the application passes things though properly, and that ColorSync
> figures out which one of many possible printer profiles (for different printing
> conditions) matches your tag.
I’m also nervous about the possibility that, rather than doing a null transform, it does a full transform from the space back to itself, with all sorts of quantization and rounding effects going on. But, at least superficially, this seems to be working.
> As I've noted many times in the past, relying on null profile matching is a fragile
> mechanism. Explicit tagging (A "do not color manage" tag) is the right technical solution.
Singing to the choir, brother! Be really nice if somebody @apple.com whom I’m sure is reading these words would pay attention for a change. Even if it were a checkbox buried deep in the dialog box, behind the filing cabinet warning of the leopard, I’d be thrilled -- as would basically _everybody_ who ever even thinks about building a color profile.
Thanks, Graeme, for once again saving my bacon. I seriously owe you a cup of coffee / beer / other suitable beverage....
Cheers,
b&
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden