Exercise 2: Primary & Secondary Colours

In art Red, blue and yellow are the primary colours almost all visible colors can be obtained by the additive color mixing of these three colors that are in widely spaced regions of the visible spectrum. Green is not because blue and yellow make green. However the primary colours of light are red blue and green. Mixing these colours can produce all of the colours of the spectrum.

Secondary Colours are the mixture of any two of these Primary Colours

  • Red + Blue = Purple
  • Red + Yellow = Orange
  • Yellow + Blue = Green

The hue of each secondary colour can be changed by adding more of one of the primary colours.

These are visually explained in these two diagrams from wikipedia.

color-wheel-primary color-wheel-secondary

Primary Colours:

Secondary Colours

None of these images have been altered in post processing other than lens correction which is automatically applied when importing the images using Lightroom 5. I have found looking at these images and comparing them within the colour change and the difference overall in higher and lower exposure I have noticed that across the all the images when boosting the exposure on any colour we lose significantly more detail in the image than by doing the same amount down. However with a lot of modern cameras having a tendency to underexpose an image slightly the added half a stop plus gives the colour a more vivid and bright appearance which work well to capture the eye. It took a varied amount of thought to come up with a suitable subject for each colour, all where pre-planned in advance as to places I knew had each colour from my experiences on previous trips and also looking at photos from previous trips as a guide. When looking over the selected images I was aware that purple, blue and red all seemed to be paint, something in the course guide that is mentioned to avoid if possible, and while I have included them this is because I feel the quality of the colour difference between them is significant, the blue being completely different to them both, an obvious matte effect metal while both painted wood, the composition and effects of the colour vary from close up with the texture of the wood against an overall image showing the compositional aspects and context of the colour.


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