I was talking to a friend of mine today about photography and was talking about Macs. He said he would love to get an Imac with their nice LED screen and a thought occurred to me. Many people seem to suggest Imac's for photography because of the higher ram capabilities and better graphics but what about the screen? Is the LED screen of the Imacs good for photo editing? I thought I read somewhere that the screens that apple uses for the Imacs are different somehow and good for editing photos. Is this true? If not, can you hook up another monitor to the Imac? (I don't know what kind of ports it has besides usb).