Focusing Screen Selector Guide - Nikon F3 High-Eyepoint Instruction Manual

· , - ACCESSORIES-continued-- - -- -- - - - - - -
Focusing Screen Selector Guide
Type A: Mane/Fresnel field with 3mm¢ circu lar split -image rangefinder spot and
12mm¢ reference circle. Rapid and accurate focusing. Excellent for general
photography.
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Type B: Mane /Fresnel
field with 3mm~ fine·
ground mane focusing spot and
~ 11mm~
reference circle. Good for general photography. especially with long lenses
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Type C: Fine-grou nd matte field with 4mm¢ clear spot and cross hair. For
photomicrography, astrophotography " and other high-magnification applications,
using parallax focusing on aerial images.
D
Type 0: Overall fine-ground matte field. For specialized close-up photography and
for use with long lenses.
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Type E: Matte/Fresnel field with 3mm¢ fine-ground mane spot, 12mm¢ reference
circle , and etched horizontal and vertical lines. Ideal for architectural photography.
Type G: Clear Fresnel field With extra-bright 12mmcp mlcropnsm focusing spot for
viewing and focusing in poor light. Four models (Gl- G4) are available corre-
sponding to specific focal length lenses. Depth of field cannot be observed.
Type H: Clear Fresnel field with microprism focusing pattern over the entire screen
area. Permits rapid focusing on any part of the screen with optimum edge -Io-edge
brightness in poor light. Available in four models
(Hl-H4 )
corresponding to
particular focal length lenses.
Type J: Matte /Fresnel field with central microprism focusing spot and 12mmcp
circle . Good for general photography.
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Type K: Combination of Type A and
J
screens. Matte/Fresnel field with 3mm¢ split -
image rangefinder spot surrounded by 1 mm-wide microprism doughnut. Rapid and
accurate focusing for subjects with both straight lines and ill-defined contours.
Suitable for general photography.
Type
l:
Same as Type A screen bul with split-image rangefinder line at a 45° angle.
Best for subjects with horizontal lines.
Type M: Fine -ground Fresnel field with 5.5mmcp 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 rangelinder line at a 45° angle and
etched horizontal and vertical lines as an aid to composition . Rapid and accurate
focusi ng for subject with hori zontal or vertical lines or iii -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 composition . VoJorks best with
lenses having maximum apertures from f/3 .5 to 1/5.6.
Type T: Matte /Fresnel field with split-image rangefinder, 12mm¢ reference circle,
and horizontal and vertical lines. Used when preparing slides lor TV broadcasts.
Dotted lines indicate standard TV screen format. Solid outline shows " safe action"
area, whereas broken lines indicate "safe title" area
Type U: Matte/Fresnel field with 3mm¢ fine-ground matte focusing spot and
12mm¢ reference circle. Utilizes the same matte field as Type S, but with lenses
longer than 100mm the image in the viewfinder is easier to see. With shorter focal-
length lenses, this screen is not suitable because of light fall-off in the corners .