Apple Aperture 1.5 (New Features) User Manual
Page 13
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Using the Boost Controls
The Mac OS characterizes each digital camera’s RAW file format to determine an optimal
contrast setting. The Boost controls allow you to set the strength of the contrast when the
RAW file is decoded. A value of 0 (zero) applies no contrast adjustment, and a value of 1
applies the full Apple-recommended contrast adjustment.
To adjust the Boost parameter:
1
Select a RAW image imported with or migrated to Aperture 1.1.
2
In the Adjustments Inspector or Adjustments HUD, do one of the following:
 By default, the Boost slider is set to 1.00. Drag the Boost slider to the left to decrease
the amount of contrast applied to the image during the RAW decoding process, and
drag the Boost slider back to the right to increase it.
 Click the left or right arrow in the Boost value slider to adjust the contrast by 5 percent
increments, or drag in the value field.
 Double-click the number in the Boost value slider, then enter a value from 0.00 to 1.00
and press Return.
A value of 0.00 applies no contrast adjustment to the image during the RAW
decoding process. A value greater than 0.00 increases the contrast adjustment to the
image. A value of 1.00 applies the full Apple-recommended contrast adjustment for
the specific camera model.
Using the Sharpening Controls
You can turn on sharpening during the RAW decoding process by selecting the
Sharpening checkbox in the Adjustments Inspector or Adjustments HUD.
Note: When the Sharpening controls in the RAW Fine Tuning area of the Adjustments
Inspector or Adjustments HUD are turned off, Aperture applies no sharpening
adjustments during the RAW decoding process.
Use the Boost slider and value slider to
adjust the amount of contrast applied
during the RAW decoding process.