The standard laser matte screens for the Canon New F-1 are very bright, and they have a choice of focusing aids, plus they have the option of extra bright laser matte optimized for wide or long lenses, though the extra bright versions can be hard to find. I have the standard AE screen, which I almost never use, the standard spot metering screen, which is my main screen, and the extra bright tele spot metering screen, which I use mainly with the 600/4.5.