Apple aperture マニュアル

 

Adjust the area over which the chroma blur effect is applied by doing one of the following:

 The default value for the Radius slider and value slider is determined by the camera 

used to create the RAW image file. Drag the Radius slider to the right to increase the 
radius of the area over which the chroma blur effect is applied during the RAW 
decoding process, and drag the Radius slider back to the left to reduce it.

 Click the left or right arrow in the Radius value slider to adjust the radius by 

increments of one-tenth of a pixel, or drag in the value field.

 Double-click the number in the Radius value slider, then enter a value from 0.10 to 

10.00 and press Return.

A value of 0.10 applies the least amount of chroma blur during the RAW decoding 
process. A value greater than 0.10 increases the chroma blur effect during the RAW 
decoding process.

Digital image sensors produce noisy images at certain settings (generally high ISO 
settings and long exposures). The Mac OS analyzes the noise characteristics of each 
camera and uses them to control parameters such as sharpness. You can turn on the 
automatic adjustment by selecting the Auto Noise Compensation checkbox. 

Select a RAW image imported with or migrated to Aperture 1.1.

In the Adjustments Inspector or Adjustments HUD, select the Auto Noise 
Compensation checkbox.

Aperture applies the automatic noise-compensation adjustment.

Use the Radius slider and value slider to adjust 
the area over which the chroma blur effect is 
applied during the RAW decoding process.

Select this checkbox to turn on the 
automatic noise adjustment.