3 Olympus OM System FOCUSING SCREENS 1, 3, and 7

Description

This is for three Olympus brand focusing screens. Used but in excellent condition. Each comes with a plastic case that includes the screen, a tweezer-like handling tool and small brush. Screen inventory and uses printed on back of each case. Screens are:
#1 -
Microprism-matte type (for most lenses). Standard type focusing screen, suitable for general photography. Fast and accurate focusing is done on the central microprism spot as well as on the surrounding matte area. The subject is in focus when the jagged pattern of the microprism spot disappears and the spot becomes crisP and clear. When a lens with a maximum speed of F5 6 or slower is used, the microprism darkens and focusing must be made on the matte area. The meter needle indicates proper exposures
#3 -
Split image-matte type (for most lenses).  Suitable for general photography ensuring critical focusing, and ideal for photographers who prefer the split field and coincidence type focusing - particularly advantageous when taking a subject with vertical lines in which focusing is done easily by aligning the split lines. When a lens with a maximum speed of F5.6 or slower is used, the split prism darkens. The meter needle indicates proper exposures.
#7 -
Microprism-clear field type (for super telephoto lenses).  Developed primarily for use with super telephoto lenses. this clear field screen provides an extremely bright finder image The microprism spot remains bright even with a lens whose maximum speed is F11' so that this screen is ideal for use with super telephoto lenses with slow lens speed. Note: The lack of a matte surface means depth-of-field effects cannot be as certained and the meter needle does not indicate proper exposures.
Please email with any questions.