Resolution: 300
Bitmap only contain black and white pixels.
Increasing the bit depth means more colours are available. eg 8bit
RGB- display a wider range of colour larger than available to print with CMYK.
When converting RGB to CMYK the colours come out duller.
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This shows the colours as they will be printed in CMYK and so if you then change the mode to CMYK there should be no change.
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Swatches
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You can access the swatches by clicking window and swatches, this will bring up a selection of default swatches.
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When choosing a colour if you pick one which is outside of the gamut then this small warning sign will appear next to the square of colour informing you of this, therefore allowing you to choose another colour.
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If you use the eye drop tool on an image this creates your foreground colour and can then add to swatches. this therefore means that you can create a palette based on an image.
A spot colour- creates consistency, allows you to choose a colour outside of CMYK, it is also cheaper if you are using only two colours only using two printing plates.
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Creating a duotone image- the image has to be grayscale to start with.
If you click the first square and then colour libraries, you can select you spot colour.
As it is a duotone, select a second colour to work with your first. By changing the curve, you can change the levels of the colour and how much of each colour is shown.
Duotone image
Channels- a channel shows how a CMYK image is made up, shows the amount of each level.
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