Part of my workflow in CS3/Aperture is to crop the image generally to a 6 x 4 image ratio. In the box next to the image ratio is the resolution which is still sitting at 300 as I haven't changed this setting.

The question is, is this setting degrading the image version (the changed file is used within the aperture environment), as this would be a concern if I decide to print a larger version of the image at a leter date.