My MBP only has a 250GB hard drive, I have NEVER in all of my computers used all the hard drive. I have 100gb's of photos on it. Here was my problem I had multiple duplicates on the computer. I could not figure out how I was going to find them and delete the dups. I found a great app called Tidy-Up, I got all the dups off within a couple of hours. My external hard drive went to sh** so I have to buy a new one and get these damn pics off. The iPhone pics are huge files grrrr.