Operation Manual

• PPI field: Enter the PPI for the images in the contact sheet in this field.
Note: This option appears dimmed unless the Print Resolution is set to Custom.
Image Adjustments
Use the following controls to adjust brightness, contrast, saturation, and image sharpness.
In addition, you can click the Loupe button to check your adjustments and image
sharpness before printing.
Note: The adjustments applied using the Print dialog are applied to each image in the
contact sheet uniformly.
• Brightness slider and value slider: Specify a brightness setting so that the images in the
contact sheet match the display’s output as closely as possible. Because displays
illuminate images, images shown on a display screen tend to appear more luminous
than when printed. Increasing the brightness value can compensate for this difference.
A typical setting ranges between 1.1 and 1.2.
• Contrast slider and value slider: Apply additional contrast to the images in the contact
sheet using the Contrast slider and value slider. Some printers have a tendency to print
images a bit “washed out.” Adding additional contrast can enhance the tonal values
where they otherwise would have appeared flat.
• Saturation slider and value slider: Increase or decrease the image saturation in the contact
sheet using the Saturation slider and value slider.
• Sharpen checkbox: Select this checkbox to apply a sharpening adjustment to the images
in the contact sheet. Use the Amount and Radius sliders and value sliders to modify
the parameters of the Sharpen adjustment.
• Sharpen Amount slider and value slider: Specify the amount of sharpness applied to the
images in the contact sheet. Because images appear sharper onscreen than they do in
print, a sharpen adjustment is often necessary to make the printed images match the
images that appear onscreen.
• Sharpen Radius slider and value slider: Specify the area over which the sharpening
adjustment is applied (the distance, in pixels, that Aperture uses to evaluate sharpness).
• Loupe button: Click this button (with a loupe icon) to open the Loupe. Use the Loupe
to zoom in to the images in the contact sheet to ensure that the additional adjustments
you’ve applied to them meet your expectations.
643Chapter 19 Printing Your Images