I wouldn't worry about the reduced contrast ration if you are using your monitor for photographic work since the contrast ratio of inkjet printers is slightly lower than what you have. The key thing regarding calibration of monitors is to insure you get a print that matches your monitor and depending on the viewing conditions next to your monitor, a number of different possible settings can provide a match. A useful essay on this is at: http://www.luminous-landscape.com/tutorials/why_are_my_prints_too_dark.shtml Just FYI, I have a BP of 0.35, WP of 120 and Contrast Ratio of 380:1 and I get a good match of prints to monitor when using a Solux light source mounted next to the printer. From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of xun wang Sent: Saturday, September 10, 2011 1:40 PM To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: Crushed shadow details I'm not sure if there is a default black point for argyllcms. The x-rite profile is quite decent actually as far as I can tell, it's just not nearly as flexible. At 6500k(my lcd's native now is ~5k) 100cd/m2 white point, I see black level at 2, have a contrast ratio of ~780:1. I'm not sure what the BP is for x-rite because it doesn't say. Using ArgyllCMS and BP adjusted to 0.3/cdm2, I see BL from 1, but with a reduced contrast ratio of ~470:1. On a similar note, I was originally planning to calibrate my i1 display 2 off the colormunki and use the i1d2 to get better shadow details because everyone is saying that spectro doesn't perform as well as a colorimeter in dark patches, I understand it's because of the increased noise. But so far I'm not seeing any real world differences when I compared ColorMunki with i1D2+CCMX in the shadow. I checked out the B&W gradient & examined the dark patches in the shadow and didn't notice any conclusive differences between the 2. What exactly should I be looking for? I did however see higher dE in RGB gray balance when I did cross profile verification using both to measure against each other, not sure they mean anything, but here you go. All settings used are the same & built using high quality setting, with only difference in hardware. For CM I turned on Adaptive Hires & BP Drift Compensation. Using ColorMunki for verification: 1) CM profile: http://tinyurl.com/4yqu4km 2) i1D2 profile: http://tinyurl.com/3kgq5od Using i1D2+CCMX for verification: 1) CM profile: http://tinyurl.com/3jncfnc 2) i1D2 profile: http://tinyurl.com/3fkhqz8 On Sat, Sep 10, 2011 at 7:50 AM, tony22p <tony22p@xxxxxxxxxxx> wrote: But Xun, to me this raises a question. If you had to raise the black point did you then wind up being slightly out of calibration? In other words, was the black point setting originally where the calibration software said it needed to be? From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of xun wang Sent: Saturday, September 10, 2011 12:40 AM To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: Crushed shadow details Never mind I see what I did wrong. All I had to do is to raise the black point a bit to get all the shadow details. On Fri, Sep 9, 2011 at 10:22 PM, xun wang <xun911@xxxxxxxxx> wrote: Thanks that works! I did some some further testing and comparison, and noticed that with ArgyllCMS I still get less shadow details than the profile created using X-rite's OEM software(ICC v2). Using photoshop's curve tool, the lowest discernible shadow details using x-rite profile is 2. With ArgyllCMS profile it's 4. I don't see any noticeable color casts in the shadows by either profile. I also get less gamut volume with the ArgyllCMS: 1,114,180 vs 1,087.920 Below is the DispcalGUI screenshot for the settings I used, please let me know if there're anything I haven't optimized. Because I would really love to use ArgyllCMS for my main calibration tool for its powerful features and flexibilty. But for now the x-rite OEM software seems to give superior result yet taking a fraction of the time. DispcalGUI setting screen shot: http://tinyurl.com/3vw7o9y I also ran "Very Profile", I'm not entirely sure but it also seems to agree that the x-rite profile is oeverall slightly more accurate? x-rite profile verification: http://tinyurl.com/44eptzd argyllcms profile verification: http://tinyurl.com/4yqu4km Any help and inputs are greatly appreciated! Xun On Fri, Sep 9, 2011 at 2:54 PM, Florian Höch <lists+argyllcms@xxxxxxxxx <mailto:lists%2Bargyllcms@xxxxxxxxx> > wrote: Am 09.09.2011 20:28, schrieb xun wang: Is there anyway I could create a "single gamma + matrix" file for Colormunki using the existing saved calculation data without running through the "Calibreate & profile" process again? it's painfully slow when I use "adaptive hires" + Black Drift Compensation for the Colormunki. Yes, you can use the existing ColorMunki data to create a new profile from it. (using the commandline tools, give the existing .ti3 as last argument to colprof. Or if you use dispcalGUI, set the desired profile type, then in the "Options" menu -> "Create profile from measurement data...", then select the .ti3 file) -- Florian Höch