Requirement
3 images, 1 scene x 3 different daylight conditions
Purpose
- To appreciate how the human eye sees the colour of light and how the camera records it
Technical Learning
- The colours of the rainbow are the visible wavelengths of electromagnetic radiation
- Sunlight is our standard for colour and brightness. At midday it looks 'white' (colourless) to the human eye. This happens because the eye mixes all colours to produce white
- Light becomes coloured when it is missing part of the spectrum, e.g. at sunset, when sunlight has further to travel through the atmosphere, blue light is filtered out creating a warm colour cast
- Daylight acquires colour in two directions
- It can become 'warmer' (yellow, orange and red) during sunrise and sunset
- It can become 'cooler' (blue) within shade on a sunny day
- Changes in the colour of light are graded using a colour temperature scale
- They are also more pronounced in reality, i.e. as recorded by the camera, than as seen by the eye (which tends to neutralise changes in the colour temperature of light(
Exercise Instructions
- Set the White Balance of your camera to Daylight (vs. Auto)
- Photograph an object with a neutral colour in (a) full sunlight at midday (over 40° above the horizon), (b) in shade again at midday and (c) sunlit at sunset on a clear day
- Compare the results with your memory of the light conditions
Images and Review
See Project 4.2b
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