| Converting colour photographs to black and white - understanding which colours turn blacker and which turn whiter and how to control the effect | |
To understand what happens to colours when they are converted to grayscale monochrome
look at the blue bird near the centre of the photographs on the left.
Depending which colours are used for the conversion the blue bird becomes either black, white or gray, also notice what happens to the other colours. The book aimed at photographers: Black and White in Photoshop CS3 and Photoshop Lightroom |
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| Below is the original colour photograph as seen in Photoshop |
When the Red channel is singled out |
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| When the Green channel is chosen | Above the effect when choosing the Blue channel |
