I found about screenrecycler that expands your macbookpro desktop to your imac screen using vnc. Its pretty good and saves you the money of buying the extra monitor for the mbp. however, because its over the home network, its not smooth and still slow. Aperture has an option where you can output images on the secondary screen which worked with my experiment on mbp.
Its still not instant but wondering if there is another software similar to this that does the same thing.
Its still not instant but wondering if there is another software similar to this that does the same thing.