Datacolor User to User Support Group.

David, thank you for detailed response.

I have some doubts, however, that this is the correct solution and this is why:

Profile that is selected under ColorSync is supposed to be profile for the printer/media. ColorSync will take your data and convert it to this profile before passing it to print driver. The only way you can get ColorSync to not molest your data is by tagging your data with the same profile that is selected in ColorSync. So if this is going to work, you are either tagging your data with "Generic RGB", or ColorSync assumes that untagged data is in "Generic RGB" (I'll assume you are sending untagged data). I do not believe this could in any way have anything to do with Canon drivers as such.

I tried printing the target another way: I opened it in PS, assigned it an RGB profile, saved it, opened it in Preview, printed it ColorSync and the same profile. Result was very similar to your suggested method. At first glance I thought it was the same, but on closer inspection I realized it was different and measurements confirmed it. I profiled both ways, and it was clear that the second method was the right one.

Then I tried something else, I used sRGB instead of "Generic RGB" in Spyder3Print. I thought I remembered I read somewhere that this was now default for ColorSync with untagged data. You guessed it - the result was the same as with Preview method.

As another test, I tried printing with Spyder3Print on Epson, the usual way with Epson controls > off, as well as ColorSync > sRGB. Both were identical, further suggesting that for ColorSync on Snow Leopard untagged data is assumed to be sRGB, not "Generic RGB". (all this hinges on the assumption that you are sending untagged data from Spyder3Print)

Please let me know if you are able to verify these results.

--- In datacolor_group@yahoogroups.com, David Miller <dm2363@...> wrote:
>
> 
> On Jan 9, 2010, at 5:08 AM, marko.mili wrote:
> 
> > I'm using the old 1005 spectro with v4.1.1 software under Snow  
> > Leopard and I am unable to produce a useful profile for Canon iP4500  
> > with Kirkland paper and HobbyColor ink.
> >
> > I print targets with Color Matching > Canon Color Matching and Color  
> > Options > Standard in the print dialog. Targets come out looking  
> > very similar to what's on screen, and the sample I print within  
> > Spyder3Print comes out gorgeous. Problem is, if I use this icc  
> > profile to print from anyplace else, it comes out all nasty, dark,  
> > greenish. In Preview I select Color Matching > ColorSync + created  
> > icc profile, Color Options > grayed out. In Lightroom and PS CS4 it  
> > works similarly. All produce nasty results.
> >
> > With my Epson R280 I have no such problems. I print target with  
> > Color Matching > EPSON Color Controls, Color Management > Off.  
> > Photos printed from Preview with Color Matching > ColorSync +  
> > created icc profile look the same as when the sample is printed from  
> > Spyder3Print.
> >
> > Any suggestions on how to print targets on Canon so I can produce  
> > useful ICC profiles?
> >
> >
> 
> 
> Yes: The problem is: you're not printing the targets correctly.
> There's a problem with all Canon drivers and Snow Leopard: (as
> well as most Canon drivers under Leopard, unless you're lucky
> enough to (a) be using the right driver, and (b) to have installed
> it a certain way):
> 
> The control for turning color management OFF doesn't show up in the
> Canon-specific part of the driver. If you can't see that control (a
> popup menu selection, which simply "vanishes" and doesn't appear under
> Leopard or Snow Leopard), then you can't turn off color management
> the normal way.
> 
> This isn't a problem with Epson or HP drivers. Both families
> of their printer drivers have "OFF" controls which appear normally
> and work correctly under Leopard and Snow Leopard, as well as Tiger.
> That's why you're not having a problem with your R280. With Epsons,
> as long as you choose BOTH "Epson Color Controls" and the "Off"
> setting for color management, you'll get a properly printed (non
> color managed) target.
> 
> The other clue to your problem is your description of the target
> prints for the Canon as "gorgeous". They're not supposed to be (they
> look "gorgeous" because they're color managed, which is wrong). Target
> prints should be darker than that if they're printed correctly.
> 
> So here's the fix for you (and everyone else on this list who has
> Canons should pay CLOSE attention: this is the only way to build
> profiles for them under Leopard or Snow Leopard, and it applies to
> all custom profiling systems):
> 
> - Make sure you're running OSX 10.6.2 or whatever the latest SL is.
> There have also been some Canon driver updates that will show up
> in System Preferences:Software Update, so make sure you've got
> nothing left to apply as an update. Another way to make sure you
> have the latest Canon driver installed: go to Print & Fax, select
> your current Canon driver, and click on Options and Supplies... to
> see what version it is. (It should be 10.26.0.0 or later, and here's
> the Apple list of latest drivers for all printers):
> 
> http://support.apple.com/kb/HT3669
> 
> If you don't have the most recent driver, then click "-" to remove
> the older Canon driver from the list. Then, with the printer
> attached and powered on, click "+", and add back the driver for it
> (this should download and install the latest version for you).
> 
> - Now: when you PRINT and want to turn off color management in
> Spyder3Print, THIS is the way to do it:
> 
> - In the Color Matching pane of the driver, select ColorSync (not
> Vendor Matching, or Canon Color Matching!)
> 
> - In the popup beneath that, you'll see "Automatic"; a list of all
> the Canon standard profiles; and a command to choose from other
> profiles. Use that last command to see a list of all profiles on
> your system.
> 
> - Select "Generic RGB" from the list. (this is the key). Then say
> OK and you'll see that "Generic RGB" shows beneath the ColorSync
> radio button in the Color Matching pane. This is the secret to
> disabling color management with the Canon drivers in Snow Leopard
> (and it also works in Leopard, as well, although in that case, a
> warning gets displayed underneath "Generic RGB", which can be ignored)
> 
> - Select the paper type, output quality, resolution, etc. as usual
> and print the target sheet. (Just leave the Color Options pane alone)
> 
> - NOW you should get a properly dark (non-color-managed) target print.
> Measure this and build a profile.
> 
> - Printing with "No Color Management" from Photoshop actually works
> the same way. It invisibly pushes through "Generic RGB" or an equivalent
> when you choose "No Color Management" in its Print dialog, This is why,
> in the Color Matching pane of the driver, ColorSync subsequently comes
> up auto-selected and also disabled; Photoshop has done the same thing
> I just described "under the hood" and as a result, that choice in the
> driver gets "locked".
> 
> - When printing through the profile in Photoshop: do it the usual way.
> (Photoshop Manages Colors, choose the profile, Saturation intent, etc
> etc etc). It should work fine.
> 
> - When doing a test print from inside Spyder3Print: since Spyder3Print
> applies the profile internally to the image data before it's sent to
> the driver, you should set the driver up exactly the same as when you
> printed the target image (as I've described above), so this would be
> ColorSync:Generic RGB in the Color Matching pane.
> 
> 
> David Miller
> Senior Software Developer, Digital Color Solutions
> Datacolor
>