About uploading RAW files to My Photo Stream
RAW files imported into Aperture can be uploaded to My Photo Stream and viewed on your iOS devices. The way the RAW file’s image is uploaded depends on how the RAW file was imported into Aperture and whether any adjustments have been applied.
Note: When you upload a RAW photo via My Photo Stream, an optimized JPEG copy is created and added to the photo stream. For more information, see My Photo Stream overview.
RAW image state
How the RAW image is uploaded to My Photo Stream
RAW image with no adjustments applied
The RAW file is uploaded to My Photo Stream.
RAW image with adjustments applied
The JPEG file for the preview image is uploaded to My Photo Stream.
For information about preview images, see Preview images overview.
RAW + JPEG image pair
The file that is uploaded is determined by the frontmost file in the RAW + JPEG pair.
For information about RAW + JPEG pair import settings, see Import RAW + JPEG image pairs.