Minolta Flash meter IV User Manual

I L
LUM
INANCE
CA LCU LATIONS
To measure the illum
inance of
an ambient
light
(non-f
lash
)
source
:
1
.
Attach
the optional
flat
diffuser.
2.
Set switches
on left
side
of
meter
to:
Analog-displayswitch.. .. ."CONTRAST"
Digital-displayswitch. .."ExlN"
Norm al
lanalyze
switch . .
.
"NO
R
M"
Single/mu
lti
switch .
"S
I N
G LE
"
3,
Set
measuring
mode
to
"AM
Bl".
4-
Set
function
switch
to
"lSO",
then
set the
film
speed
to ISO
100.
5.
Set
function
switch to
"TlME"
and shutter
speed
to
1
sec.
or
any of the C
lN
E
settings.
6.
Position
the
meter
so that
the flat
diffuser is
parallel
with
and as
close as
possible
to
the subject
be
ing
i I lu
m i
nated
,
then
press
the measu
ring
button
to
ta
ke
a
read i
ng.
7.
Use the
"ExlN"
number
in
the
formula
below.
fux=2.5x2ExrN
Lux
100,000
10,000
1,000
14
16
lExlN.l
Example
With
a
display reading
of
"Ex
lN
10.0"
work
the
equation
as
follows:
fux-
2.sxrExlN
-2.5x2lo'o
= 2.5 x 1024
=
approx.
2600
100
10
1
12
10
NOTE
o
F or
precise
measu
rement
of
the
Minolta
llluminance
Meter
il
lum
inance,
use
is
recommended.
of
Exposure Value Numbers
To determine
the
Exposure value for
ambient
light
measurement,
set the
meter
to
"AMB|"
and
"TlME"
modes,
then
set
the shutter speed to
either
1
sec.
or
any
"ClN
E"
setting.
Any
ISO f ilm-speed
setting
can
be
used.
The
"Exl
N" number
that will
appear after
taking
a
measurement is
the
Exposure
Value
("EV")
at
that
ISO
setting.
4'.1

Minolta Flash meter IV Specifications

General

Light Receptor	Silicon photo cell
ISO Range	ISO 3 to 8000
Shutter Speed Range	30 min to 1/8000 sec
Display	LCD
Type	Handheld Flash Meter
Measuring Modes	Ambient, Flash
Measuring Range (Ambient)	EV -2 to EV 19.9 (ISO 100)
Measuring Range (Flash)	f/1.0 to f/90.9