Apple Aperture 2 Manual do Utilizador descarregar pdf (Página 452)

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452 Part III Performing Image Adjustments

Working with the Monochrome Mixer Controls

You use the Monochrome Mixer adjustment controls when you want more control over

converting your image from color to black and white than simply desaturating it gives

you. The Monochrome Mixer allows you to adjust tonal relationships and contrast in an

image by adjusting the red, green, and blue channels independently. The effects of a

monochrome adjustment are similar to attaching a color filter to a camera lens and

shooting black-and-white film. In fact, the Monochrome Mixer comes with a set of

presets that simulate shooting black-and-white film through a color filter.

Choosing a Monochrome Mixer Preset

Aperture comes with a set of Monochrome Mixer presets that simulate the effect of

shooting black-and-white film through a color filter, such as a red filter. You can use one of

these presets, or you can apply a preset as a starting point and then fine-tune the color mix.

Before Monochrome Mixer

adjustment

After Monochrome Mixer

adjustment (Yellow Filter preset)

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