In todays lesson we got into groups and shared the 5 pieces of printed graphic design we were asked to bring in. First we had to sort them into piles of the amount of colours used.
Two Colours
Three colours
Four Colours
Infinite colours (Pictures)
We made a few mistakes with some of the prints with two colours because the we counted the stock as a colour.
Optical Mixing- is colour made up of lots of dots
Physical Mixing- is colour that is pre mixed to form block colours
Next we had to organise the prints by the printing process that been used. To do this this we had to look really closley to determine if it was optical or physical.
Optical
Physical
4 Colour Process Guide
The four colour process works in CMYK. It uses optical mixing of cyan, magenta, yellow and black.
The four colour process is more flexible to work with, in terms of colour, but can be a lot more expensive to print.
Offset Litho Production- uses four plates (CMYK) that are slightly offset to allow the colours to mix to create the required colours.
The darker the colour, the closer together the dots are.
The paler the colour, the further apart the dots are.
Formula Guide
Formula guide colours are physically mixed colours that are pure, flat blocks of colour. The downside to using this method is there are a limited number of colours to choose from. However it only uses a single plate which is 25% of the cost of four colour printing.
Tints
Tints are affected by the shift in between the space of the dots. The paler the tint, the further apart the dots are, making the eye perceive the colour to be desaturated.
Task
We had to write a list of questions in our groups that we wanted to know about colour. We swapped questions with the next group and have to find out the answers for each question.
Group Questions
When contrast of extension is balanced, is it a high or low contrast?
There is no contrast because the colours are of equal proportion, therefore balancing each other out.
Does contrast of extension apply to colours that aren't complementary?
It does apply to non complimentary colours depending on the tone and saturation of the colour.
Do tertiary colours have complementary colours too?
Yes, the colours opposite to them on the colour wheel, for example. the complimentary colour of red-violet would be yellow-green.
How does artificial/natural light affect the perception of colour?
Yes, natural light is in a constant state of flux, therefore the eye cannot perceive colour in the same way depending on the environment. Always use constant lighting.
Does tone affect the temperature of a colour?
Yes, the darker the tone the colder the temperature and the lighter the tone, the warmer the colour is.
Is it possible for a colour to be warm if de-saturated
Depending on how de-saturated the colour is, affects the temperature of the colour. When a colour is fully de-saturated it becomes a neutral, therefore its not possible to distinguish the temperature.
Can complementary colour be balanced? ( contrast of extension )
Yes they can be balanced however contrast of extension requires these proportions of the complementary colors to achieve a harmonious or balanced amount of color:
Varying the proportion greatly for these combinations results in a more expressive image, while maintaining these proportions gives you a harmonious, quiet, and possibly static image.
How would simultaneous contrast be used?
I dont think its a case of how simultaneous contrast would be used, its more about being aware of it when making design decisions.
How do you make gold and silver?
Gold and silver can be specified from the metallic pan-tone swatches.
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