Aperture Preset - Milky Shadows and Vintage Texture
This is for Canon 7D files (and smaller)
There is also a version for Canon 5DmkII files:
Few Curves controls one after the other, pushing and pulling back the shadows.
The last Curves has a custom texture (in the Brush) which adds a vintage vignette.
It’s actually pretty easy to create custom textures in Aperture, you only need to find the folder called “Masks” inside the Aperture Library. Than you can open this TIFF greyscale file in Photoshop and you can paste your own texture and overwrite the file. Close and open Aperture and the new Mask will be loaded.