Color Space Mappings
Image with Working Space e.a. Adobe RGB
Devices
Image with Working Space e.a. Adobe RGB
Devices
Some Monitor
Camera/Scanner
Some Monitor
Some Printer
Color Space Relation
2.3.2 COLOR WORKING SPACES
Photoshop stores the information about the profile within the image (TIFF, JPEG). Avoid applications that do not use or create these embedded profiles and also do not support the use of monitor profiles.
The standardized color spaces range from narrow to broad. If your image is used with a narrow range then some colors get lost in the transformation. Broadening the range to "invent" the missing colors is not possible. If the range is very wide, you deal with colors that probably none of your target devices will be capable of rendering.
The following list shows some of the most important color spaces:
• sRGB: This space is still narrow but is supported by some printers. It might be a good idea to use sRGB for photos on the WEB.
• Adobe RGB (1998): This is a very popular space among Photoshop users. It covers most printable colors. This is what we use.
• Pro Photo RGB: Color space supported by Kodak (very wide gamut).
Properly displayed color spaces use 3D charts. The industry also uses some form of 2D charts to display color spaces.
Below is a color space plot that we generated with GretagMacbeth Profile Maker Pro 4.1 Profile Editor.
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Gamut Display (using Profile Maker Pro 4.1 Profile Editor) Pro Photo RGB is extremely wide
Adobe RGB (1998) much smaller and sRGB is very narrow
The color space of the Hahnemuehle German Etching water color paper exceeds sRGB but fits into Adobe RGB
The color space of the Epson Luster paper has a much wider range than the water color paper (no surprise here) and exceeds both sRGB and Adobe RGB (in some blues and greens)
2.3.3 PROFILES FOR DEVICES Monitor
By now, it should be clear that high-quality color management starts with the best possible monitor profile. Without accurate profiling of your monitor, your workflow will be seriously limited.
Camera
In addition, profiles for your camera are very important. There are two types of profiles;Camera generic, and specific profiles for individual cameras. Adobe's Camera Raw 2.0 and other raw converters are carefully profiled and support generic camera profiles. Be aware that creating your own camera profiles can be very tricky, since the targets have to be shot under very controlled light conditions.
There can be some significant variation between individual cameras of the same model. This will depend on specific camera brand and model.
Printer
There is actually no single profile for a printer. The profile is always for one paper, using the same ink set, printed on the same individual printer and with the same printer driver and settings (e.g. DPI) . Profiles for different types of printing paper can vary significantly. Some of the newer inkjet printer may vary very little from one individual printer to the other, but in general profiles may need to be generated for the individual printer itself.
2.3.4 PHOTOSHOP COLOR AND MONITOR PROFILE SETTINGS
Photoshop is not intuitive when it comes to finding the monitor profile that it uses.
Select Edit->Color Settings and use the RGB drop down list to select working spaces and scroll (usually up) until you find the entry "Monitor RGB" (the Figure shows Sony_LCD_Std_D65). This entry indicates the monitor profile used by Photoshop. Close "Color Settings" dialog box by clicking on the "Cancel" button to avoid changing your working space settings.
Color Settings
Settings: | Custom
Advanced Mode Working Spaces RGB CMYK Gray Spot
Color Managernen RGBl CMYK: Gray:
Profile Mismatches: Missing Profiles:
Other
Monitor RGB - Sony LCD Std D6S
Adobe RGB (1998) Apple RGB ColorMatch RGB sRGB IEC6196É.-2.1
Conversion Optior Engine: Intent: |7 Use Black Point
Advanced Contro I Desaturate Moni I- Blend RGB Color
Adobe RGB (19981
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Cancel
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Apple RGB
CIE RGB
ColorMatch RGB
e-sRGB
KODAK DC Series Digital Camera Kodak DCS RGB
Kodak ERIMM Color Space to Scene Reference Space
Kodak ProPhoto RGB
KODAK sRGB Display
Nikon WinMonitor 4,0.0.3000
NTSC (1953)
PAL/SECAM
Phase One - PC Monitor
Description -
is well-suited For documents that will be converted to CMYK. Use this space iF you need to do print production work with a broad range oF colors.
* Preview
Finding the Monitor Profile in Photoshop
The following screen capture shows how we setup the "Color Settings" in Photoshop (the most relevant settings are marked).
- Photoshop Color Settings
Note: We ignore the settings for CMYK and Gray here as we only cover the RGB color setup in our workflow
This section is not a replacement for Photoshop documentation, book or training. Although we cover a lot of ground, we will only introduce the main tools we regularly use in our digital workflow.
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