6. Variable Sensing Spot
-----------------------------------
The sensing spot
of
meter
of
the
M
IR
ANDA
Sensorex
is
placed behind the
mirror
in
al
i
gnment
with
the
optical axis,
The
area and angle
of
this CdS sensing spot
\'ary automatically according to
the
lens in use,
When
using a wide angle lens, a\-erage
li
ght
'reading is more effecti\'e, while
with
telephoto
lens spot reading is a prerequisite,
In
the
Sensorex system, the use
of
a wide angle lens
automati
ca
ll
y sets the meter closer to a\'erage
reading, wh
il
e on the other hand the u
se
of
a telephoto lens decreases the area and angle
of
the
se
nsing spot
to
enable most accurate
spot reading,
28
mm
(
10
'
10
')
35
mm
(8
' 10')
50
mm
(5
' 4
0')
135
mm
(2
'
10
')
4
00
mm
(45
')
800m
m
(23
')
-,
I
t , -
•
When
the
lens is interchanged ,
the
li
ght
acceptance angle
of
the expos
ur
e meter
changes automatica
ll
y,
Since however mark-
ing
of
this variable
se
nsing spot
on
the
screen
of
the
finder would impair clear view,
the actual area
is
not
indicated (See illust-
ration for
the
ar
ea
of
the sensing spot when
lenses
of
different focal lengths are used),
•
With
any type
of
lens,
see
that
the
main
ar
ea
of
the
subject (
The
face in case
of
portraits) is centered in the
mult
i-micro-
pri
sm
focusing spot,
• Aim
the
camera s
li
ghtly downward when
taking exposure read
in
g
of
an open land-
scape,
This
will pre\'ent the bright
li
glit
from the sky directly entering
the
se
nsing
spot and causing under-exposed results,
23
To Next Page
Loading...
Need help?
General
