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Colour Managemant & ICC Settings

Per Karlsson
I am using Capture One Pro 7 and am unsure about the best way to manage colours and use colour profiles.

1. Monitor profile

In previous versions of C1 there was a setting where you chose the monitor profile. In C1 7 this seems to be gone.

I have my monitor calibrated with an i1 Display Pro calibration device and it sets the default monitor profile. I assume that C1 uses that default monitor profile. I hope that is correct.

2. Image ICC profile in C1

I shoot with a Canon EOS 5D mk II and C1 sets the "Canon EOS-5D MkII Generic" as the colour profile for the images (Colour > Basic Characteristics).

I am unsure if this is the best choice or if I should change this to, say, Adobe RGB 1998. Any advice?

The output file from C1 is a 16 bit tiff.

3. Post processing in Photoshop

The images are then post-processed in Photoshop. Photoshop is set to use Adobe RGB as working space (Color Setting > Working Spaces).

The images that I import into Photoshop from C1 are converted into the working color space (Adobe RGB) before being processed and saved.

The end result is an hq jpeg file that is sent to my stock agency (or to direct customers).

Would it be better to convert to Adobe RGB 1998 already in Capture one?
Or would it be better to keep the "Canon EOS-5D MkII Generic" profile to the end? (That seems unlikely since it is not a standard working space.)

Any advice would be much appreciated!
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  • Paul Steunebrink
    A1. You assumption is correct. The monitor profile is set at system level and CO7 as application interfaces with the system. No configuration need to be set in CO7.

    A2. You should stick to the camera profile in Base Characteristics tool. It provides CO7 with the color characteristic of that specific camera. This is also known as input profile (see A3). AdobeRGB is not suitable as input profile.

    A3. With your workflow, you should set AdobeRGB as working space for your TIFF or JPEG files. This is considered the output profile. Alternatively, you can use the camera profile ("embed camera profile") as working space profile, as these profile are also made suitable for that task, but from your workflow description I would suggest AdobeRGB.
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  • Per Karlsson
    Paul,

    Many thanks. That's excellent!

    I understand why C1 should then use the Canon camera profile in Base Characteristics.

    One clarification: you talk about the "output" profile, and suggesting that I use Adobe RGB. That's what I would then set in the Process Recipe > ICC Profile in the Output tab, correct?

    It might perhaps be best to let C1 set that profile instead of having it converted in a later stage?

    I also suspect that keeping the Canon profile in the final file could be confusing to many people so I would rather not do that.

    -Per
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  • Paul Steunebrink
    Per,

    Yes, the 'output profile' is what you define in Process Recipe > Output tab > ICC Profile. I think it is best to let set CO7 set the profile and leave it to during your workflow. The fewer conversions the better.

    I agree that a camera profile (Canon) as working space can be confusing to other people. It is more intended for images that you keep in-house (for example when you do your own printing to a high-end inkjet printer).
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  • mli20
    It would appear to me that there is some confusion in the concepts of on the one hand of camera profiles and on the other of color spaces such as sRGB and Adobe1998.

    The object of camera profiles is to govern the conversion from sensor data into RGB values. They will for instance allow you to select a more contrasty conversion. In the case of Nikon cameras the profiles are called Picture Controls, and there are various available in-camera such as standard, neutral, vivid, landscape etc. Similar exist with cameras from other vendors. Unfortunately, the vendor's camera profiles can more often than not only be read by their proprietary software. So software developers take to defining profiles for cameras themselves.

    Likewise there will be profiles for monitors, scanners and printers. What they have in common is that they describe and govern hardware behaviour. They are always hardware specific.

    The object of color spaces is quite different; they specify which RGB-values that can be interpreted: more in Adobe1998 than in sRGB. To again use NIkon as an example: As well as specifying a camera profile (Picture Control) I can choose a color space: The two are not that same, and one cannot be substituted for the other. Color spaces are never hardware specific.

    Well, this represent my knowledge on the subject. Please join in to correct any mistakes.

    Cheers, Mogens
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  • Per Karlsson
    Mogens,

    Yes, I think you're right. Some confusion. For someone who does not have a deep knowledge of colour it can be a bit confusing. Your comments helped making it clearer.

    The situation is further complicated though since my new computer / monitor has a software called PremierColor (made by Portrait Displays Inc for Dell to manage their wide gamut RGB LED screens). Still trying to figure out how best to use it together with my monitor calibration, or perhaps simply to disable it. But this is another story.

    Paul,

    Thanks again. Your advice has certainly helped me to understand what the best settings should be.

    -Per
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