In Canon DPP 4, does “Use the OS settings” for display color management apply my monitor ICC profile twice?
Asked 5/12/2019
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In Canon Digital Photo Professional 4, Preferences → Color Management includes a “For display” option with choices such as sRGB, Use the OS settings, and Monitor profile.
If I’ve calibrated my monitor and set that ICC/ICM profile as the default in Windows, what happens when DPP is set to “Use the OS settings”?
Will DPP apply the monitor profile a second time on top of Windows, causing incorrect colors, or does it simply use the same monitor profile once for display color management?
Relatedly, if I manually choose the same monitor profile under “Monitor profile,” should the result be the same as “Use the OS settings”?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
7y ago
2 Answers
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Color management is a chain with several different links. Each link needs its own profile.
The 'For Display' setting in the DPP 4 [Preferences → Color Management] section that asks about monitor profile affects how the computer's graphics adapter sends colors to the monitor. It has no effect on the inner workings of DPP 4 itself.
If you select 'Use the OS setting', the same monitor profile will be used that is used by default based on your system's settings. If you have used a hardware/software calibration tool and are using that profile as the system default (which is what most of us do), then leaving DPP 4 set to 'Use the OS setting' will continue to use that profile to compensate for the measured output of the monitor.
If you select another option, DPP 4 will instruct the graphics adapter to use the specified monitor profile choice in place of the default OS profile for the monitor, not in addition to it.
Originally by user15871. Source · Licensed CC BY-SA 4.0
user15871
7y ago
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Generated from our catalog & community — verify before relying on it.
No—this should not cause double correction.
Monitor color management is a chain: the image has a source color space, and the display path uses a monitor profile so colors can be converted correctly for your screen. Windows typically does not automatically color-correct every app’s output on its own; color-managed applications must use the monitor profile themselves, either through the OS color-management system or their own engine.
In DPP, “Use the OS settings” means DPP uses the monitor profile currently set in the operating system. If your calibrated ICC/ICM profile is the system default, DPP will use that profile for display. It is not Windows correcting the image once and then DPP correcting it again.
Likewise, if you choose “Monitor profile” and select the exact same profile that Windows is using, the result should be effectively the same.
The “sRGB” choice is different: it treats the display as if it were an sRGB monitor, which is only appropriate if that is actually correct or if you want a generic fallback. For an accurately calibrated display, “Use the OS settings” is normally the right choice.
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