Im currently in the process of purchasing my first DSLR, and hopefully waiting for canon or Nikon to come out with something new. In the meantime, however, I am collecting some old MF lenses. I am also looking into getting a new focus screen for the DSLR I eventually purchase (it seems there are companies that offer these to assist with MF, in many different designs) or I want to modify an existing screen from an older SLR type camera. So far I have ran into two types: The "cross" type, where a circle is split into 2 or 4 portions either diagonally or horizontally and The 'prism' type, in which there are a variety of little micro triangle prisms that dissapear as the subject comes into focus. There also hybrids that use both of these technologies. Because I have entered photography after the days of MF, which of these was considered 'superior' back in the day? Is a hybrid my best bet or should I go with one or the other? I prefer older MF lenses because they are of high quality ( I can get relatively fast lenses for cheap) to price ratio. I will also be using these for video, and I think the screen would really help. Finally, will this affect AF at all (if I do decide to get AF lenses down the line)?