Canon T 90 - Manual (Page 132)

6) Turn the aperture ring of the lens until the
'■ oo ” is displayed,
7) Press the shutter button.
• To the right of the viewfinder," • " dot is
displayed and it moves upward or down­
ward as the aperture is changed When
the “
oo
” mark is displayed at the bottom
of the viewfinder, the “ m ” is aligned with
the triangle index. •
If the “ OP "
is still displayed when the aperture
ring is turned to the maximum aperture ot your
lens, set a slower shutter speed on the display
panel.
If the "
O i
” is still displayed when the aperture
ring is turned to the minimum aperture of your
lens, set a faster shutter speed
• Notes for this mode and the situations in
which the error is displayed are all the
same as for stopped-down AE mode.
p.75)
underexposure display: indicates that the
aperture must be opened,
overexposure display: indicates that the
aperture must be closed.