But that’s only the beginning with iPhoto 6. Gone are the days of the carousel projector and a darkened room now a slideshow involves high-resolution photographs slipping on and off a computer screen, complete with elegant transitions between pictures. Although there are those for whom a photo isn’t real unless it appears on a piece of paper (and iPhoto can satisfy those people too), one of iPhoto’s coolest features is its capability to present photos on screen in a wide variety of ways, ranging from slideshows on your Mac and Web-based presentations that anyone can view to customized screen savers and QuickTime movies.