Use the Sharpening controls
You can adjust sharpening during the RAW decoding process by using the RAW Fine Tuning Sharpening controls in the Adjustments inspector or the Adjustments pane of the Inspector HUD.
Note: The effect of sharpening an image or group of images using the RAW Fine Tuning adjustment is very subtle. More sharpening effects can be obtained using the Edge Sharpen adjustment. For more information, see Sharpen an image.
Adjust sharpening applied during RAW decoding
Select a RAW photo.
Note: If the RAW Fine Tuning controls don’t appear in the Adjustments inspector or the Adjustments pane of the Inspector HUD, the selected image is from a previous version of Aperture. You must first reprocess the image using the most current RAW image processing. For more information, see Reprocess photos from earlier versions of Aperture.
Adjust the strength of the sharpening effect using the Sharpening slider and value slider.
A value of 0.00 applies no sharpening effect to the image during the RAW decoding process. A value greater than 0.00 increases the sharpening effect.
Adjust how the sharpening effect is applied to edges using the Edges slider and value slider.
A value greater than 0.00 intensifies the sharpening effect on hard edges.