Focusing Screen Selector Guide - Nikon F4 Instruction Manual

Focusing Screen Selector Guide
Type B
Type U
Type F
Type C
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Matte/Fresnel field with 5mm-dia, and 12mm-d ia,
reference circles and focus brackets, Good for general
photography,
Matte/Fresnel field wi th Smm-dia, and 12mm-dia,
reference circ les and focus brackets, Suitable with
telephoto lenses longer than 200mm,
Matte/Fresnel field with 5mm-dia, and 12mm-dia, ref-
erence ci rctes and foc us brackets, Suitabte with reilex
tenses and telephoto lenses tonger than 400mm,
Fine-ground matte field with 5mm-dia, clear spot and
cross hair, For photomicrography, astrophotog raphy
and other high-magnification applications using
paratlax focusing on aeri al images,
Fine-ground Fresnel field with 5mm-dia, clear spot
and cross hai r for use in parallax focus ing on aerial
images, plus mi llimeter scales for catc ulation of in-
dividuat magnification of objects or for measuring
objects, Brilliant image in dim light. Suitable for close-
ups, photomicrography and other high-magnification
appticati ons,
Type E
TypeJ
Type K
Type P
Type G
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Matte/Fresnel fie td with Smm-dia, and 12mm-dia, ref-
erence circles, focus brackets and etched horizontal
and vertica t lines, tdeat for architecturat photography,
Matte/Fresnel field with central 5mm -dia, microprism
focusing spot and 12mm-dia, circle, Good for general
photography,
Matte/Fresnel field with 3mm-dia, BriteView split-
image range find er spot surrounded by 1mm-wide
micropri sm doughnut. Rapid and accurate focusing
for subjects with both straight lines and ill-defined
contou rs, Su itable for general photography,
Same as Type K but with BriteView spl it-image range
finder line at a 45° ang le and etched horizontal and
vertical lines as an aid to composition, Rapid and ac-
curate focusing for subjects with horizontal or vertical
lines or ill-defi ned contours, Suitable for general
photography,
Clear Fresnel field with extra-bright 12mm-dia, micro-
prism focusi ng spot for viewing and focusing in poor
light. Four models (G1, G2, G3, G4) available corre-
spond to lenses with different focal tengths, Depth-of-
field preview not available,
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