Inversion – Component Blend Modes

blenderThe 8th part of our Blend Mode series covers the final 8 Blend Modes. The first 4 in this post are the Inversion / Cancellation Modes which look for variations between the base and blend layers to create the blend; The second 4, are the Component Modes group whose blending results are based on different colour qualities between two images.

To demonstrate the impact of the various blend modes we have chosen two wildly different images; the first, a colour image will act as the ‘Base colour’ whilst the second, a black and white image of the black to white tonal ‘zones’ will act as the ‘blend Colour’.

ORIGINAL IMAGES

These are the original images which will be used for the ‘base colour’ layer and ‘blend colour’ layer.

contrast start imagestart blend colour

 

 

 

 

 

THE INVERSION / CANCELLATION MODES

difference modeDIFFERENCE

Uses the colour in each channel and depending on which is brighter, subtracts either the blend colour from the base colour or the base colour from the blend colour. Blending with white inverts the base colours and with black produces no change. Use this mode if you want to align two copies of the same image – if the result is a (mostly) black layer, they are aligned.

exclusion modeEXCLUSION

Creates an effect similar to but lower in contrast than the Difference mode. Blending with white inverts the base colour values. Blending with black produces no change, but Blending with 50% grey, produces 50% grey. It is NOT useful for checking alignment.

 

subtract modeSUBTRACT

Looks at the colour information in each channel and subtracts the blend colour from the base colour – any resulting negative values are clipped to zero – the result is a drastic darkening of the image, see how the light areas of the gradient are almost pure black, whilst in the dark areas of the gradient there is minimal change.

divide modeDIVIDE

Divide produces the opposite effect to Subtract. It looks at the colour information in each channel and divides the blend colour from the base colour. Looking at the gradient you can see dark areas of the blend layer produce bright colours, while the light areas produce small change.

 

THE COMPONENT MODES

Hue modeHUE

Creates a result colour with the luminance and saturation of the base colour and the hue of the blend colour without modifying the luminance or brightness.

 

 

saturation modeSATURATION

Creates a result colour with the luminance and hue of the base colour and the saturation of the blend colour. As can be seen, in an area with no saturation (anywhere on the grey scale) the result is a monochromatic image.

 

colour modeCOLOR

Creates a result colour with the luminance of the base colour and the hue and saturation of the blend colour. This preserves the grey levels in the image and is useful for colouring monochrome images and for tinting colour images.

 

luminosity mode

LUMINOSITY

Creates a result colour with the hue and saturation of the base colour and the luminance of the blend colour. This mode creates the inverse effect of Colour mode, it modifies colour without modifying the overall tonality.

 

 

If you have any actions, presets, tips, worked examples  you would be happy to contribute and help others get a good start with their photo processing, please get in touch – pay your knowledge forward !

 

 

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