Requirement
Optional
Purpose
- To understand the impact of using colour filters on tones in monochrome images
Technical learning
- Black and white film reads tones from the brightness of colours hitting the emulsion. So, colour filters are used to adjust in camera the tones rendered in a scene
- The principle by which filters work is that its colour brightens similar hues and darkens ones on the opposite side of the colour wheel
- The same effect can be achieved in digital imaging by using software applications
Key filters and their impact
- Pale yellow - darkens slightly a blue sky
- Deep yellow - darkens sky and lightens foliage
- Yellowish green - reduces haze, lightens foliage
- Orange - sharpens distant subjects and darkens blue skies
- Red - turns blue skies black and increases contrast of sunlit scenes
- Deep Red - darkens sky close to distant horizons
Exercise instructions
- None, but let's see how digitally applied coloured filters in Silver Efex Pro impact an image.
Images and review
[to follow]
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