Design Production: Design for Print - 2

Photoshop

• Top the image always tells you the colour mode of the image
• RGB is how things are shown on screen
• Work in photoshop for print you need CMYK
• If you print in RGB then the image colours won't be the same, it produces many more colours then what are possible to print

• If a colour is out of CMYK colour then it will change to one within the range

• Photoshop default mode is in RGB and a lot of things won't work if your working in CMYK

• The gamut shows you the colours that won't print on the image in greyscale
• Image -> adjustment - one option to duller the colours is saturation, this shows the gamut going from the image

• Another option is to check proof colours, this gets rid the vibrant colours that aren't available in CMYK

• This is a good thing to do first so you no before your adjustments to the image are made that the colours are print proof - true visual representations of how it will look

Swatches

• No information on CMYK percentages just descriptive names
• ALT and click will delete the default swatches
• Save an empty swatch palette to avoid having to delete them (must include one colour to save)

• Will bring back your empty swatch palette

• Alerts you its not a printable colour the warning sign
• Web safe colour is shown by the cube

• Before transferring to Indesign convert to CMYK 

Colour Libraries

• You can type a number and it will find the colour its self

Spot colours

Duotone:

• Image has to be in greyscale
• Can adjust the levels to get a better contrast

• Different options for duotone

 

• Choose your spot colour from colour libraries

• Black has been replaced with the one spot colours

Two spot colours

• Can choose how much of the tint of the spot colour go to the original black scale

Click and drag to curve

Channels

RGB shows the different colours

Grey image only shows grey

CMYK

• When you click on the box the eye shows the layer of the colour

• Second icon on the bottom saves selection from image

When the alpha channel is in view

When the grey channel is not in view

• Can alter selection by using the paintbrush 
• Drag channel down to first icon and changes take effect

• Can create a new alpha channel and double click to get a spot colour

• Use the paintbrush or selection to make parts the spot colour

• Can create a tint by changing the default to 50% grey

• You can spot colour areas that you want for varnish or glue so the printer nos where
• Make sure spot colours is checked when saving

Wont preview with the spot colour, only software reads that