Canon T 90 - Manual (Page 183)

Type Application
E. New Split/Microprism
Standard with the T90 Three focusing meth­
ods (split image, microprism and matte/fre-
snel) are possible according to preference
H. Matte/Scale
Matte/Fresnel field with fine matte center
plus horizontal and vertical scales in millime­
ters Recommended for close-ups, photoma-
crography, copy work and architectural pho­
tography where it is useful to know the size of
the subject or the magnification involved.
Double Cross-hair
Reticle
Matte/Fresnel field with clear center spot
containing double cross-hair reticle. While
focusing, move your eye left to right If cross­
hairs stay in the same position on the subject,
then the subject is in focus Recommended
for photomicrography, astrophotography, or
other applications requiring high magnifica­
tions
L. Cross Split-image
Matte/Fresnel field with cross split-image in
the center of the screen which divides the
subject in half both horizontally and vertically.
The subject is in focus when the four quarters
merge to become one unbroken image.
Suitable for general photography
1 0 6
NEVER change the screen with your fingers, A
special tool is provided with each accessory
focusing screen to facilitate screen replacement.
These focusing screens are exclusively designed
for the T90, Do not use them on other cameras.