Nikon f2 - Manual (Page 63)

SCREEN—continued
Type H: Clear Fresnel field with microprism focus­
ing pattern over the entire screen area. Permits
rapid focusing on any part of the screen with opti­
mum edge-to-edge brightness in poor light. Availa­
ble in four models (H1-H4) corresponding to par­
ticular focal length lenses.
Type J: Matte Fresnel field with central microprism
focusing spot and 12mm0 circle. Good for general
photography.
Type K: Combination of Type A and J screens.
Matte Fresnel field with 3mm0 split-image range­
finder spot surrounded by Imm-wide microprism
doughnut. Rapid and accurate focusing for sub­
jects with both straight lines and ill-defined con­
tours. Suitable for general photography.
Type M: Fine ground Fresnel field with 5.5mm0
clear spot and double cross hair for use in parallax
focusing on aerial image, plus millimeter scales for
calculation of individual magnification of objects
or for measuring objects. Brilliant image in dim
light. Suitable for close-ups, photomicrography and
other high-magnification applications.
Type P: Same as Type K but with split-image
rangefinder line at a 45° angle and etched horizon­
tal and vertical lines as an aid to composition.
Rapid and accurate focusing for subject with
horizontal or vertical lines or ill-defined contours.
Suitable for general photography.
Type R: Same as Type A but with rangefinder
prisms of sloping surfaces at a smaller angle and
horizontal and vertical lines to aid proper composi­
tion. Works best with lenses having maximum
aperture of from f/3.5 to f/5.6