The idea of this project was to arrange the images I took during Projects 32 and 33 in their order in the spectrum; red, orange, yellow, green, blue, violet. When arranging them I placed the darker colours lower and the light colours higher, doing so creates a curve which is in fact a graph of our eye’s sensitivity to colour.
Light is colourless but we see colour when part of the spectrum is missing. During a sunset on a clear day the sky closest to the sun changes colour from blue to yellow then orange and sometimes even red. This occurs because there is more atmosphere between you and the sun at sunset. The higher density of particles scatters more of the light. The shorter wavelengths (blue) get scattered more easily leaving the longer ones (orange/red) more visible.
Colour Temperature
Below I have taken three photographs using the daylight white balance setting.
Full sunlight at Midday
Midday sunlight is colourless and so the first scene appears identical to how I remember it.
In the shade at Midday
In the shade, the scene appears very blue. At the time of shooting I didn’t notice any difference, this is because human eyes adapt to different colours and everything appears to be lit neutrally. To correct/neutralise the blue cast that shade creates (in scenes with a high colour temperature) a straw coloured filter can be used.
Sun close to Horizon
During sunset, my scene appears more yellow than I remember. The sun is low in the sky and therefore further away from us than at midday. Because there is more atmosphere between myself and the sun, the shorter wavelengths of light (blue) scatter more easily and colour photographs with a yellow haze. Using a blue filter will correct/neutralise the yellow cast of a picture with a low colour temperature.
