Work with DNG files
In Aperture, you can adjust how OS X decodes RAW images in the DNG format. If the digital camera that captured a photo is supported by Aperture, the calibration data for that camera is used to decode the RAW file in the same manner as if it were decoded from the RAW file format itself. If the DNG file is from an unsupported camera, Aperture uses the camera information stored in the DNG file to decode the image.
Adjust the RAW Fine Tuning parameters of a DNG file
Select a DNG file imported with or reprocessed using Aperture 3 image processing.
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 Aperture 3 image processing. For more information, see Reprocess photos from earlier versions of Aperture.
Adjust the RAW Fine Tuning parameters as necessary for the image.