Depending on the types of lenses you are using or nature of your assignment, some may even find the standard Focusing Screen 1-1 is often inconvenient or difficult to use. With super-telephoto lenses for instance, the microprism becomes excessively dark. With the high magnifications of macrophotography and photomicrography, it may even be impossible to focus. With interchangeable screens, one can find the particular type of screen that best suit the type of photography or individual needs. The clear-field type focusing screens provide brighter viewfinder images.
Screen Focusing screen is supplied singly and it comes with a tweezers.
This allows the focusing screen to be gripped securely without touching the surface when fitting it through the lens mount of the camera. The OM System Focusing Screens provide you with a high level of in focusing versatility. There are optional Screens available to suit practically every picturetaking situation. The optional Focusing Screens come with a special tool. This allows the Screen and screen frame to drop down.