To sharpen areas You can increase the contrast between specific pixels in an image with the Sharpen tool. 1 Select the Sharpen tool and click a paint object to put the image in edit mode, if necessary. 2 To configure the Sharpen tool, double-click the tool. In the dia- log box, adjust the following settings and click OK. •   To gradually diminish the brush size as you drag, turn on Size; to reduce the sharpening effect as you drag, turn on Pressure in the Fade area. For both options, you can also type a number in the “Fade within” text box to set how quickly the effect fades. •   If you use a pressure-sensitive tablet and want stylus pres- sure to affect size and pressure, turn on Size and Pressure in the Pressure Varies area. 3 Select a brush shape in the Brushes palette. For more informa- tion, see “Creating paint objects with painting tools” on page 31.588. 4 Adjust the Pressure setting in the Brushes palette. A setting of 1 affects the image slightly; 85 dramatically sharpens the image. 5 Drag the Sharpen tool in the image area you want to edit. Can- vas applies the sharpening effect to pixels touched by the tool. Saturating and desaturating colors With the Sponge tool, you can add or remove gray content from spe- cific areas of an image. 1 Select the Sponge tool and click a paint object to put the image in edit mode, if necessary. 2 To configure the Sponge tool, double-click the tool to open its dialog box. •   To gradually diminish the brush size as you drag, turn on Size; to reduce the Sponge effect as you drag, turn on Pres- sure in the Fade area. For both options, you can also type a number in the “Fade within” text box to set how quickly the effect fades. Sharpen tool Sponge tool
Canvas 8 Help: Painting and image-editing (29 of 46)                                                Page #615