Exercise 10: Colour cast and white balance

Temperature

I processed the images, for this exercise, by changing the temperature in Adobe bridge, rather than altering the camera settings on each of the images when taken

The first set of images were taken on a sunny day at Carnbooth House Hotel, Carmunnock, Glasgow.
Thanks go to the staff for allowing me access to the grounds and permission to take these photographs..

The images were taken at Av F8, Ts 1/125s at ISO 100 with a Canon 24 / 70mm F2.8 lens at 24mm.

The temperature of the light within the image, "as shot" was 4650K. 

The temperature settings were changed to:

• Auto - 4600K - this created little change from the image as shot.
• Daylight - 5500K - this created a red cast and a very small amount of highlight clipping,
• Cloudy - 6500K - this created slightly less of a red cast but an increase of highlight clipping and
• Tungsten - 2800K - this created a blue cast and a large amount of highlight clipping.

The second set of images were taken on a cloudy day at Ardrossan Marina, with the round the world yacht Drum, of Simon La Bon's fame, in the foreground.

The images were taken at Av F11, Ts 1/60s at ISO 100 with a Canon 70 / 200mm F2.8 lens at 70mm.

The temperature of the light within the image, "as shot" was 5350K.   In this image the sky was over exposed with a large amount of highlight clipping.

The temperature settings were changed to:

• Auto - 6200K - there is a slight increase in highlight clipping and red cast from the "as shot" setting,
• Daylight - 5500K - the areas of highlight clipping appear to be similar but the image appears slightly less of a red cast, 
• Cloudy - 6500K - there is an increase in highlight clipping and the colours return to the same saturation as in the "auto" image.and
• Tungsten - 2800K - this created a blue cast and a large amount of highlight clipping.

The third set of images were taken on a sunny day in the shade in my back garden.

The images were taken at Av f/5, Ts 1/160s at ISO 100 with a Canon 16 / 35mm F2.8 lens at 16mm.

The temperature of the light within the image, "as shot" was 5050K.   The sky had highlight clipping.

The temperature settings were changed to:

• Auto - 6950K - there was less highlight clipping in the sky area and colour more saturated,
• Daylight - 5050K - the areas of highlight clipping appear to be similar but the image "as shot",
• Cloudy - 6500K - there is an decrease in highlight clipping and the colours seemed a but more saturated
• Tungsten - 2800K - this created a blue cast and a large amount of highlight clipping.