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yet another thisMinolta Flash Meter IV User manual
User manual for yet another thisMinolta Flash Meter IV. 50 pages in English. Read the original PDF, download or print a copy without registration.
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- Minolta
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- yet another thisMinolta Flash Meter IV
- Document type
- User manual
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- English
- Pages
- 50
- File size
- 4.0 MB
- Category
- Light meters
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- Not specified in catalog
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Page 3 · Read text
MINOLTA FLASH METER IV
The Minolta Flash Meter lV is the most advanced exposure meter available for measur-
ing both flash and ambient light sources. By attaching the appropriate receptor, you can
take precise incident-light or ref lected-light readings.
A large LCD data panel shows complete exposure information in both analog and
digital form. A built-in microcomputer and memory function make it easy to calculate
the exposure for highlights, shadows, or an average of two areas.
The Flash Meter lV also features a special "analyze" function that lets you take
readings of flash and ambient light simultaneously. After taking a reading, you can vary
the exposure settings to make either light source dominant.
A wide range of accessories are available for your Flash Meter lV, including spot-
metering attachments and external receptors for incident-light and reflected-light meter-
ing. And if you use a Minolta (Maxxum) 7000 or 9000 camera, the Data Receiver DR-
1000 enables remote control of the camera via infrared signals from the Flash Meter lV.
With other carneras, the lR Receiver-Trigger can be used to trigger a flash unit by remote
control.
Before using the Flash Meter lV, please read this manual carefully to learn about the
meter's parts and functions. This way, you can begin to realize the full potential of the
Flash Meter lV right from the start.
I www.orphancameras.com
,., ."-#ri*;.rr&dl;\View original page 3Page 7 · Read text
PREPARATION
Installing the Battery Switching on the Data Panel
The Flash Meter lV's memory and measurement The Flash Meter lV
circuits are powered by one AA-size battery that fits does not have a power
into battery chamber A. A 1.S-volt alkaline or carbon- switch. Even with power
zinc or 1.2-volt nickel-cadmium battery can be used. supplied continuously to
the meter's memory, the
power consumption is1. Remove battery cover minimal. To conserveby sliding it downward. power, the Flash Meter lV automatically switch-
es off the data panel display 4 minutes after taking a
reading or pressing a key. The most recent display can
be recalled at any time by pressing the On/Recall
button. The display is illuminated for 8 seconds after
the key is pressed.
Automatic battery check
When battery power is
-.f2. Insert an AA-size low, the displays on the I ralEara.arr?f!lltt
battery into chamber A data panel will blink while
with plus (+) and minus taking a measurement. lf (-) ends as markdd in this occurs, install a new ryh-550-
the battery chamber. battery. When the battery is / | | \ \
completely exhausted, the data panel will remain
blank even after pressing the On/Recall button.
o When replacing the battery, remove the dead
battery, press the On/Recall button to clear the
meter's circuit, then insert a fresh battery.
3. Realign battery cov-
er and slide it upwards
until it snaps into place.
o The meter will not operate unless a fresh battery is
properly installed.
Infrared Tranrmitter
' The Flash Meter lV has a built-in infrared trans-
mitter for use with the optional Data Receiver
DR-lOfi) and or lR Receiver-Trigger units. lf you use
either, of these units, a battery must be installed in
battery chamber B. A 6-volt alkaline (4LR44, Eve-
ready 537 or equiv.l or 6.2-volt silver-oxide (4SR44,
Eveready il4 or equiv.) battery can be used. See
page 42 for more information about using these units.
www.orphancameras.comView original page 7Page 8 · Read text
Setting the Film Speed Attaching a Receptor
The Flash Meter is supplied with two receptors: a 1 . Set the function
switch to "lSO" posi- spherical diffuser for incident-light measurements and a reflected-light attachment for reflected-light meas- tion.
urements. An explanation of how to take incident-
and ref lected-light measurements appears on the
following pages.
Spherical Diffuser for inci-
dent light
up/down2. Move the
control downward to de-
crease the ISO setting
and, upward to increase
the setting. Each time
the control is moved, the Ref lected-l i ght attachmentISO setting changes by
1/3 stop. The setting for reflected light
changes continuously if
you keep pressing the
up/down control.
I ra 2 2ta ta t lt t. 2rlaattato
ArEl r-Enounfun *.
,C,\ U
To attach a receptor:
3. After setting the film speed, set the function Align the white dot
switch to "TlME" or "FNo." to take a reading. on the receptor with the
receptor index and insert
NOTE the receptor's bayonet
o Any speed from ISO 8 to ISO 6400 can be set. into the socket. Rotate
o f SO 125 and ISO 125O are displayed as "lSO 12O" the receptor clockwise to
and "lSO 1200", respectively. secure it.
o After taking a measurement, you can change the
film-speed setting and the shutter-speed/f-number
combination required for correct exposure will
also change. To remove a receptor:
Rotate the receptor
counterclockwise until
its dot aligns with recep-
tor index and lift the
receptor out of the sock-
et.
Accessories
The reflected-light attachment supplied with the
meter has a 40" angle of view. To take "spot" read-
ings of smaller areas of a scene, Minolta's 5" View-
finder or 10" Viewfinder ll can be used. The Booster
ll is available for taking reflected-light readings off a
view camera's groundglass screen or in very low light.
Refer to pages 44 and 45 for more information
about these and other accessories for the Flash Meter
lv' 5View original page 8Page 9 · Read text
GENERAL INFORMATION
lncident{ight Readings
With incident-light readings, exposure is based on the brightness of the light falling on the subject. The sub-
ject's reflectivity (how light or dark it is) does not influence the reading.
Many photographers prefer to make incident-light readings because these readings produce very predictable,
consistent exposures for most average scenes. Furthermore, this method is very quick and simple, and thus is
well-suited to determining the exposure in fast-changing situations.
Taking Incident-light Readings
Attach the spherical diffuser to the Flash Meter lV. The optional Flat Diffuser, Mini Diffuser, and the 4X and
8X Spherical ND Diffusers can also be used.
Move in close to the subiect so that you can measure the same light that is falling on the subject. Aim the
diffuser directly at the camera lens. lf you can't get close to the subject, hold the meter in the opposite direction
that the camera lens is facing.
In "AMBI" and "CORD" modes, take the reading by pressing the measuring button. In "NON.C" mode,
press the measuring button to activate the meter, then trigger the flash unit to take the reading.
Incident light metering Light source
Camera
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Reflected{ight Readings
With reflected-light readings, the Flash Meter lV averages the light reflected from all subjects in the scene. Like
all reflected-light meters, including those used in single-lens reflex cameras, the Flash Meter lV is designed to give
the correct exposure for a medium-gray tone.
The assumption is that theaveragereflectance of the various light and dark tones in a scene would be about the
same as a medium-gray tone. In a wide variety of situations, reflected-light readings produce good exposures.
A major advantage of taking reflected-light readings is that you can select which tones are most important and
determine the exposure just for these tones. For example, a bright highlight or shadow area can be measured and
the exposure can be calculated to retain detail in that area {see pages 34 and 35).
Taking Reflected-light Readings
To take a reflected-light reading, attach the reflected-light attachment. The optional Viewfinder 5o, View-
finder 10o ll can also be used. lf you use the Minolta Booster, Booster ll orSiner Boosterl, the spherical diffuser
must be attached to the receptor head.
Hold the meter near the camera lens and aim the meter's receptor at the subiect. The reflected-light attach-
ment has a 40o angle of view, so you may need to move closer to the subject so that the reading is not influenced
by the background.
To make it easier to aim the meter, the receptor head can be rotated up to 270".
In "AMBl" and "CORD" modes, take the reading by pressing the measuring button. In "NON.C" mode, press
the measuring button to activate the meter, then trigger the flash unit to take the reading.
Reflected light metering
-4 >) -./
tf
ffi
CameraView original page 10Page 11 · Read text
Selecting the Measuring Mode: Flash Light Modes
Ambient and Flash Light Measurements "CORD" (sync cord)
mode : I n th is mode, aAmbient Light Mode sync cord is connected "AMB l" (ambient between the flash unitlight) mode: Use f or and meter to trigger themeasu rements of con- f lash un it. Th is modetinuous light sources, in- can be used to take read-cl ud i ng day I ight, tu ng- ings of electronic flashsten I ights, neon and and f lash bu lbs.fluorescent lights, and
television screens.
o After ta king a read ing, you can change the shutter "NON.C" (non-cord)
speed (in "TlME" mode) or f-number ("FNo." mode: In this mode, a
mode) by moving the up/down control. The sync cord is not requ ired;
new shutter-speed lt-number combination will be you manually trigger the
displayed. flash to take a measure-
ment. This mode can be
used to take readings of
electronic f lash.
www.orphancameras.comView original page 11Page 13 · Read text
DATA PANEL DISPLAYS
1. Pointers 6. Reflected-light calculation modes
Shadow calculation mark Highlight calculation mark
7. Analyze function
indicator
2. Analog displays
Contrast scal
Memory indicators F-number scale i a'ls.e' I ot t'ts 8.
9. Under/over range
3. Shutter speed indicators
(TIME)/frame rate 10. Measuring modes
(crN E) g=hH 4. ISO film speed e-g .fr.F,::l; floo
11. Multiple measurement
5. Number of exposures/Guide Value (GV) indicator
12. F-numbers (FNo.)/Aperture Value
numbers (ExlN)
1. Pointerc 7. Analyze function indicator
Pointers above analog displays indicate the most "AN." blinks when normal/analyze switch is set
recent measurement and any memorized read- to "ANALYZE".
ings and calculated reading. 8. Memory indicators
2. Analog displays A dot appears when a measurement is stored in
When f-number scale is displayed, the pointers the memory. Up to two measurements can be
indicate the f-number setting. When the contrast stored and recalled.
scale is displayed, the pointers indicate the differ- 9. Over/under range indicators
ence in exposure for up to three readings. lf brightness is under the meter's measurement
3. Shutter speedfframo rate range, "V" blinks; if over the meter's range,
Shutter speed can be set in full-stops from tt @tt blinks.
1/8000 sec. to 30 min. in ambient-light (AMBI) o ff "U" or "4" blink together with "T|ME",
mode and from 1/1000 to 30 min. in flash "FNo.", "ExlN", "GV", or "MULTl", thg
(CORD or NON.C) modes. Frame rate (filming measurement is outside of the meter's display
rate) for movie cameras can be set at 8, 12, 16, range. Usable reading or indications can be
18,24,32, or 64 frames per second in ambient- displayed by moving the up/down control.
light (AMBI) mode. 10. Measuring modes
4. ISO film speed "AMBI" for ambient light, "CORD" for flash
When function switch is set to "lSO", film speed measurements using a sync cord, "NON.C" for
can be adjusted from ISO 8 to ISO 6400 in flash measurements without using sync cord.
1/3-stop increments. 1 1. Multiple measurement indicator
5. Number of exposures/Guide Value "MULTl" is displayed when single/multi switch
When "MULTl" is displayed, number of ex- is set to "MULTl" position for multiple measure-
posures required is indicated. Display shows from ments.
"O" to "9", then changes back to "O" and 12. F-numbers/Aperture Value numben
continues counting if additional measurements Measurements appear on display with 0.1 stop
are taken. When "GV" is displayed, the amount accuracy. F-number ("FNo.") range is f/0.7 to
of adjustment to flash power is indicated. f l9O +0.9 stop. Aperture Value ("ExlN")
6. Reflected-light calculation modes numbers range is to 45.6. -15.9 "l!1" for highlight calculation, "El" for shadow
calculation, and "El" for an average of two
measurements.
10 www.orphancameras.comView original page 13Page 14 · Read text
DIGITAL DISPLAYS
F-numbers ("FNo." settingl Aperture Value Numberr ("ExlN" settingl
When the digital- When the digital-
display ("FNo./ExlN") display switch is set to
switch is set to "FNo.", "ExlN", apertur€ value
the Flash Meter [V shows numbers are displayed on
the f-number setting in the data panel. These
digital form. The small numbers cgn be used to
number next to the f- determine the lighting
number is a one-tenth ratio of a scene or to
stop display and indi- compare readings taken
cates how much the in ambient ("AMBl"l
{..t..{ .4 . O . I . 1.. t.af-number or shutter mode with readings
speed should be changed ("CORD" f,o *g.d taken a flash E'- mode. 5rl rr.for correct exposure. * 5Y or "NON.C"l
The "ExlN" setting can also be used to display
Exposure Value ("EV") numbers which are usOd to
Adjustments for tenth-stop indications determine the illuminance of an ambient light source
(see page 41). Tenth-stop Adjustmenr
o-2 Set f-number to full stop setting
3-7 Close aperture 1/2 stop. E.9., set aper-
ture haffway between tl8 and tl11
if dispfay shows " f l8.B t".
8-9 Close aperture 1 stop. E.9., set aperture
to f 111 if display shows "llfl.Bg".
Shuttsr Speed
The shutter speed is indicated next to the 'TlME"
mark. The indication for 11125 sec. is displayed as
" i?s ". All other speeds are displayed in the usual
way.
11View original page 14Page 15 · Read text
ANALOG DISPLAYS
When the function switch is at "TlME" or "GV", F-number scale
either the f-number scale or the contrast scale can be The pointers above the f-number scale indicate
displayed by setting the anafog-display switch to f-number settings with 1|2-stop accuracy. The display
"FNo." or "CONTRAST" position. When the func- range is f rom t 11 to f /90. lf the required f-number is
tion switch is set to "F N o." , the contrast scale is outside this range, the 't<" or
displayed even if the anafog-display switch is set to and " (U " or " O" vvill blink.
"FN o.". a
11,42 2.84 5.68 lt162232456490 a
Contrast scale ""5.E,J'u"'
The contrast scale has a range from -4 to +4 stops.
Pointers indicate the differences in exposure between ffh up to three readings. Readings are indicated with
1 /4-stop accu racy f rom to +3 stops, and w ith -3
'll2-stop accuracy from -4 to -3 and +3 to +4 stops.
-1..-3s. -2 . -1 . 0 o 1 . 2x. 3.4 a
ffh'*5.8,r"''
When a single reeding has been stored in the
memory, a pointer appears above the "O" in the
center of the display.Pointers appear above the
contrast sca le on ly when a read ing is stored in the
memory.
When a shadow cal-
cufation is made, a
pointer will appear above iEl the small "S" mark "tr, I which indicates a 2.7 -stop decrease in exposure.
Likewise, highlight -4..3s. -2 . -l . 0 . 1 . 2\. 3.1.
cafculations are shown *E,[i aMB, '* -r h by a pointer above the
n small "H" mark which l.fl "tr1 indicates a 2.3-stop increase In exposure.
-. When us ing the ana- -4..3s. -2 I. -1 a:r. O . I . 2x. 3.4.
lyze function to take Jj'' f n FNo
rlr-r f f roxc read i ngs of m ixed f lash ;. ;-__l 7.n I LI' and am bient light, the ' \
pointers on the contrast scale indicate the relative
intensity of f lash and am bient light sou rces. The
positions of the pointers will change as the f-number/
shutter-speed combination is changed.
Please refer to pages 26 through 35 for more
information about the memory, shadow, highlight,
and analyze functions.
12 www.orphancameras.comView original page 15Page 19 · Read text
AMBI ENT LIGHT MEASUREMENTS
Press measuring but- Aperture-priority ("FNo.") Mode 5.
Single Measurements ton to take a measure-
ment.
1. S.t switches on left side of meter to:
Analog-display switch*. . . . "CONTRAST"
Digital-displayswitch. .. ."FNo."
Normal/analyzeswitch . "NORM"
Single/multi switch . "SINGLE"
In this example, the .a..3r. -2 . .l . 0 . t . 2i. 3.a
f-number was set to *Jl? @ aro' f/l6 and the required r. shutter speed was %Y_l ibc * When the function switch is set to "FNo." (step 3 1/30 sec.
below), the contrast scale is displayed even if the
analog-display switch is set to "FNo.". ff "TlME" and ttUltt or "O" blink, the brightness
level is outside the meter's display range. lf this 2. S.t measuring mode happens, change the f-number to obtain an appro- to "AMBI". priate f-num ber/shutter-speed com bination.
3. Sr, function switch
to "FNo.".
rA' V
4. Srt f-number by mov-
ing up/down control.
o Any f-number from
tl0.7 to f/90 can be
set in full-stops.
16 www.orphancameras.comView original page 19Page 23 · Read text
FLASH MEASUREMENTS WITH A SYNC CORD (CORD MODEI
Aperture-prioriU (FNo.l Mode 5. S.t function switch
Single Mearursments to "FNo.", then set
f-number by moving up/
down control.
1. Set switches on left side of meter to:
Analog-displayswitch*. . . . "CONTRAST"
Digital-displayswitch. . . . . "FNo."
Normal/analyze switch "NORM"
Single/multi switch .."SINGLE"
o Any f-number from t/O.7 to f/90 can be set in
full-stops.
6. Press measuring but-
ton to trigger the flash. * When function switch is set to "FNo." (step 5f,
the contrast scale is displayed even if the analog-
display switch is set to "FNo.".
2. Set measuring mode
to "CORD".
In this example, the a.{r.a..l .O.t.l..t.a
Guide Value number
of "-1 GV" indicates that flash power #\,T1oo-
should be reduced by one half for correct expo-
3. Conn.ct PC plug to sure at 11125 sec. and f/4. Alternately, if you can- not change the flash power, the distance between meter's sync terminal.
o The flash may fire the flash and subject can be increased by a factor of 1.4X. when the sync cord is Trigger voltage of some electronic flash units connected.
may not be sufficient when using "CORD" mode.
lf so, use "NON.G" mode (see page 24).
lf you select a shutter-aperture combination that
might cause overexposure of the ambient light, the
4. Srt function switch shutter speed is automatically shifted to a higher
to "TlME", then set setting when the measurement is taken.
shutter speed by moving
up/down control.
Any speed from 30 min. to 111000 sec. can be
set in full stops.
Make sure shutter speed is set within camera's
X-sync range.
20
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'l . 2H. 3.4.Shadow Calculations When the contrast -4.-3s. -2 . -1 . 0 .
Shadows calcu lations shou ld be made when a large scale is displayed, the *f, 'no
or very important area consists of darker tones. This pointer appears above il ru-7.n,- 'ii- AMBI Lt | \method is especially useful when shooting color-slide the small letter "S" to "".--
f ilm, since it ensu res that the shadow areas will indicate that the exposure has been decreased
receive suff icient exposure. 2.7 stops.
(M-C L R ") button to When the f-number1. Press the memory-clear
1.4 2 2.8 4 5.5 8 11 16 2232 456t 90clear any previous readings. scale is displayed, the 1
pointer indicates right calcu la- S*h'"'5".fifi o'"' shadow2. Measure a dark area the
that contains some detail tion, and the left
(not a solid black tone). pointer indicates the measured area.
Before pressing the shadow "S" key, you can store
two measurements in the memory. The shadow
calculation will be based on the lower measure-
ment.
Once the shadow ("S") key is pressed, the shadow
calculation cannot be stored in the memory.
.4.-3sr -2 . -1 . 0 . 1 . 2a. 3.4 lf only one measurement is memorized, shadow
##a '"'l.lJ J ^."' calculation is based on this measurements.
6rt. Press the shadow
("S") key. The read ing
will be stored in the
memory and the shadow
exposure will be calcu-
lated automatically.
The f-number setting required for proper exposure
of the shadow area will be indicated by the digital
f-number display. The " E" mark indicates that a
shadow calculation is displayed.
29View original page 32Page 33 · Read text
Averaged Calculations How to clear calculated measurements
When the scene has a wide variety of brightness, o To clear a highlight,
you can make an averaged calcu lation to determ ine shadow, or average
the best exposure. Using this method, the exposure is calcu lation, press the RECALT
calculated by averaging two measurements, such as a OnlRecall button or fq highlight and a shadow measurement. the memory-clear ("M- -JI t-t CLR") key. When the
is 1 . Measu re the I ightest -4.-3s. -2 . -l | 0 OnlRecall button
re- t area that you want to JU!- r' r-, FN" pressed, the most retain some detail (not fl t-l f- f- cent measu rement appear and the stored meas-
f \ 7.n'E, urements will be retained. When the memory-clear a specu lar high light), ""-*,_lLf - meas- then press the memory ("M-CLR") key is pressed, the most recent
("M") button urement appear and the stored measurements will
be cleared f rom the memory.
2. Measure the darkest -4.-3s. -2 . -l . 0 . 1 . 2r. 3.4 ! area that you want to m retain some detail (not
a solid black tone), then n1 \
press the memory ("M")
button.
4t\t. Press the averagi ng
("A") key to calcu late an
average exposu re.
When the averaging key is pressed, the "E!.t' mark
appears above the digital f-number setting.
When the contrast -4r-3s . -2 . 0 . I . Znc 3.lr ra
scale is displayed, two ............:- t"" E AMBI *fit pointers will aPPear at un? 1.Ll 1 equal distances from 'to ti tl t'0" posi- the center
tion .
When the f-num ber 11.42 2.84s.68 n16223245eAgO 3
scale is displayed, the -",-f.hio*"'
highlight measure- 5*h ment is indicated by
the right pointer, the averaged exposure by the
center pointer, and the shadow measurement by
the left pointer.
To make an averaged calculation, two measure-
ments must be stored in the memory.
30 www.orphancameras.comView original page 33Page 34 · Read text
Checking Other Areas of the Scene The examples below show how the different areas
After making a highlight, shadow, or averaged of the scene will be reproduced if the exposure is
calculation, you can check how other areas of the made at the highlight calculation.
scene will be reproduced. For example, after making
a highlight calcufation, you can take measurements of Measured area_______1 a. Will be reproduced asshadow and midtone areas to see how these will be -4.-3s. -2 . -l . 0 o I . 2hr 9.4. a specular highlightreproduced on the f ilm. with no detail. JIUE , -, * When the "H", "S", or 'tA" key is pressed, thecafculated exposure is fixed on the digital dispfay. fl.fir^.'' +9,Additional measurements will be ind icated on the
contrast scale. The following example shows how to b. Will be reproduced as
check other areas of a scene after making a highlight a midtone value.
calculation.
Use of the optional Viewfinder 5o or Viewfinder
10o ll is recommended.
Il. A highlight calcula- c. Will be reproduced as .4.-3s.Measured-2 . -1 . Oarea. .l . 2^. 3.t .tion is displayed after a shadow tone with ,H"pressing the highlight some detail.key. tfiT-\ f.n1
2. Press the measuring
button to take a measure-
ment of anothe r area
scene. thefrom <- measuo rement is The
indicated by second
pointer on the con-
trast scale, while the
highlight calculation
remains on the digital Measured area
display. -4.-3s. -2 . -l . 0 . 1 . 2A. 3.4
.TIME ll n 'n. LI AMBI fl.fl n -#\
31View original page 34Page 39 · Read text
FILL.IN FLASH
Often when taking pictures in direct sunlight, the 3. With the meter set shadows on the subject appear too dark. One way to to "CORD" or " NON.C" dlt+\ lighten these shadows is to fire an electronic flash flash mode, take a mea-
unit to "fill-in" (lighten) the shadow. Another name su rement of the f lash for fill-in flash is "synchro-sun" flash. light (wh ile holding the <-
The Flash Meter IV's memory function lets you meter near you r su b-
store and compare separate measurements of ambient ject).
light (using "AMB l" mode) and f lash light (using "CORD" or "NON.C" mode). Then by pressing the ilHl
On/Recall key, you can compare the measurements, o Use the same shutter-speed setting that you used
and adjust the f lash. for the ambient-light measurement.
Usually only a small amount of flash light is
needed to fill in the shadows. A good starting point is 4. Adjust the flash's power level or change the
to use about two stops less flash light than the distance between the flash and subject so that the
am bient light. With experience, you can vary the f-number for the flash light is about two stops less
amount of fill-in flash according to your needs. than the am bient light. Take another f lash measu re-
The following steps explain how to make fill-flash ment to conf irm the change.
measurements using incident-l ight readings, but o To compare the measurements, the ambient-light
reflected-light readings can also be taken. measurement can be displayed by pressing the
On/Recall key. The flash measurement reappears
when you release the key.
To make fill-in flash measurements:
1 . With the spherical o For this example, the | 1.4 2 28 4 5.6 8 il 16 2232 4564 90
diffuser attached, take an required f-number for *E[ITtMe', F l-t FNaFNO
in incident-l reading ight u,.fr am was light bient f 18, lso f: u il CORD L'I mode to deter- "AM B l" f lash was so the adjust-
mine the shutter-speed/ ed to produce a reading of f /4. f-nu m ber requ ired f or
correct exposu re of the
am bient light.
o "TlM E" mode shou ld be used so that you can set
the shutter speed with the camera's X-sync ra nge .
2. Press the memory
("M ") key to store the
read ing. Ambient light only Ambient light with fill-in flash
-4.-3.. -2 . .l . 0 . I . 2-. a.o.
Ttt{E= 1- fl FNo'" o*"' f-r Li n f, -
"-.r--h fl.iln
36 www.orphancameras.comView original page 39Page 44 · Read text
I L LUM INANCE CA LCU LATIONS
To measure the illum inance of an ambient light Exposure Value Numbers
(non-f lash ) source : To determine the Exposure value for ambient light
1 . Attach the optional flat diffuser. measurement, set the meter to "AMB|" and "TlME"
modes, then set the shutter speed to either 1 sec. or
2. Set switches on left side of meter to: any "ClN E" setting. Any ISO f ilm-speed setting can
Analog-displayswitch.. .. ."CONTRAST" be used. The "Exl N" number that will appear after
Digital-displayswitch. .."ExlN" taking a measurement is the Exposure Value ("EV")
Norm al lanalyze switch . . . "NO R M" at that ISO setting.
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
100
10
1
10 12 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
NOTE
o F or precise measu rement of il lum inance, use of
the Minolta llluminance Meter is recommended.
4'.1View original page 44Page 46 · Read text
CALIBRATION
Data Receiver DR-1000 The Flash Meter IV has been precisely calibrated
(For Minolta (Maxxuml 7000 and 9000 AF SLR to Minolta's standard during manufacture. No further
adjustment of the meter is usually required for
Transfer of exposure settings: optimum results. However, should you wish to
calibrate the Flash Meter IV to match the reading
at from another meter, the Flash Meter IV can be1. Aim the lR transmitter window on the meter
f rom the standard setting.the Data Receiver D R-1 000. adjusted -0.8 to +0.7 EV
2. Press the data-trans- To adiust the meter, use a small screwdriver to ismission ("DATA OUT") turn the measuring-level adjustment screw which
button. located under the battery cover. Turning the screw
clockwise produces a higher reading; turning counter-
clockwise produces a lower reading.The marks
around the screw represent 0.2 EV steps as shown by
the diagram.
NOTE
o The shutter speed and o The Flash Meter IV should be adjusted only after
f-number settings dis- determ in ing that the standard setting wi ll not
played on the meter produce the desired resu lts.
will be transf erred to
the camera.
- 0. 1 stop 0 *0.lstop *0.2stop -0.2stop
- 0.3stop *0.3stop
- 0.4stop *0.4stop
Transf er of exposu re settings with simultaneous
shutte r release: -0.5stop *0.5stop
Aim the lR transmitter window on the meter at1.
the D ata Receiver D R-1000. -0.6stop *0.6stop
Press the shutter-2. -0.7stop -0.Bstop *0.7stop release ("RELEASE")
button.
RELEASE
o The shutter speed and f-number settings displayed
on the meter will be transferred to the camera,
then the shutter will be released.
The following data can be transmitted:
Shutter speeds: 1|4OOO sec. to 30 sec. using Minolta
(Maxxum) 9000. 1|2OOO sec. to 30
sec. using Minolta (Maxxum) 7000.
f rom the F-numbers: Any available f-number
range available on the AF lens in use.
For example, f rom t,'l .4 to f 122 with
the AF 85mm lens
o lf the transferred data is outside the camera's
shutter-speed or f-number range, the closest
available setting is used. For example, 1/4000 sec.
will be set if the shutter speed displayed on the
meter's data panel is 1/8000 sec.
43View original page 46Page 47 · Read text
ACCESSORIES
lR Receiver-Trigger Sinar Booster 1
The lR Receiver-Trigger lets you trigger a f lash The Sinar Booster 1 enables you to take measure-
unit by remote control. This unit connects to the ments at the f ilm plane of any large-format view
flash unit's sync terminal and receives infrared signals camera. The unit's probe slips into the camera back.
from the Flash Meter fV. lt can be used with any ff has a rectangular 2.5 x 3mm window that marks
electronic flash unit. the target field which can be positioned anywhere
at the film plane. Flash or ambient light measure-
ments can be taken through the lens at any aperture
setting. This eliminates the need to compensate for
bellows extension factors. Contact your nearest Sinar
v dealer for further information.
Data Receiver DR-l000
The Data Receiver DR-l000 mounts on the camera's
accessory shoe and receives infrared signals from the
Flash Meter [V. The DR-l000 enables wireless remote
control of Minolta (Maxxum) 7000 and 9000 cameras.
With the DR-1000, you can use the Flash Meter IV to
Viewfinder 5" trigger a flash unit, set the shutter speed and f-num- The Viewfinder 5o attaches to the meter's receptor ber, and release the shutter. head for taking spot measurements of ref lected light.
f t has a 5o angle of acceptance and can be used to
take precise measurements of both f lash and ambient
light.
Booster II
The Boostsr II is a highly sensitive receptor for taking
reflected-light measurements (of flash or ambient
light) of very small areas of a scene. Readings can be
taken off a camera's groundglass screen, through a Viewfinder 10" II The View f inder l Oo II can also be used for taking viewfinder or a microscope optic, or at the f ilm plane. measurements. lt has a 10" angle of acceptance. ' The Booster II can also be used for ordinary re- spot
f lected-light measurements, and has an angle of ac- Precise readings are possible by positioning the circle in the viewfinder on the area to be measured. ceptance of approx. 60".
Note: Whenever the Booster II is used, the spherical
diffuser must be attached to the meter's receptor
head to produce correct readings.
44
www.orphancameras.comView original page 47Page 48 · Read text
Flat Diffuser Sync Cord II
The F lat D iff user shou ld be used when determin ing The Sync Cord II is a 5-meter long cord that connects
the lighting ratio between various light sources or to the meter, flash unit, and camera's sync terminal
calculate the illuminance values for continuous light together. Using this cord, you can take f lash readings
sources and guide numbers for f lash units. lt can also and release the shutter without changing connections.
be used for incident-light readings of f lat surfaces.
Spot Mask
Mini Receptor The Spot Mask lets you use the Flash Meter fV as an
aThe Mini Receptor plugs into the accessory-receptor enlarging meter. After determining the exposure for
sub-jack on the side of the meter's receptor head . lt is standard negative, you can measure areas of a
used to measure incident light in places that are sequent negatives that have similar densities as the
otherwise inaccessible to the meter's receptor head. lt standard negative.
is especially useful for close-up and macrophoto-
graphy.
I
4X and 8X Spherical ND Diffusers
These Spherical N D D iff users have neutral-density
filters which extend the upper limit of the meter's
measurement range by two stops (witfr 4X diffuser)
or three stops (with 8X diffuser). These diffusers
should be used when the light source is too bright to
be measured with the standard diffuser attached.
II
45View original page 48Page 49 · Read text
TECHNICAL DETAILS
Type: Multiple-function exposure meter for measur- D igital readouts/d isplays :
ing ambient and flash light; incident- and reflected- F-numbers: flO.7 to f 190 +0.9 in 0.1-stop incre-
light readings possible with both digital and analog ments
f u nction for Aperture Value ("ExlN") numbers: readouts on LCD data pane | ; ana lyze -15.9 to 45.6
readings of ambient-f lash lighting i n 0. 1 -stop i ncrem en ts
Receptor: Silicon photocell; receptor head rotates Shutter speeds: 30 min. to 1 /8000 sec. in 1 -stop
270" increments
Reception method: Frames-per-second for movie cameras: 8, 12, 16,
Incident: Spherical diff user (or other optional 18, 24, 32, 64; shutter-sector opening of 180"
diff users) . Film-speeds: ISO 8 to ISO 6400 in 1/3-stop
Ref lected: Ref lected-light attachment with 40" increments
angle of acceptance (or optional Viewfinder 5o, Number of multiple/cumulative exposures:0 to I
Viewf inder 10' il) (displays last digit of accumulated readings over 9
External receptors: Optional M ini Receptor, exposu res in shutter-priority mode)
Minolta Booster II Guide value (GV) numbers: to 8 in l-stop -8
Flash measuring ranges: increments
f ncident: f lO.7 to f/90 +0.9 Analog displays:
" Reflected: f 11.O to tlg0 +0.9 with reflected-light F-number scale: t11.0 to flg} (in 1l2-stop in-
attachment or Viewf inder 1 0" il; f 11 .4 +0.2 to crements)
1 /4-stop increments f lg} +0.9 with Viewfinder 5o Contrast : -4 .O to 4.0 in
Ambient light measuring ranges at ISO 100: (1 l2-stop increments from -4 to -3 or 3 to 4)
Incident: EV -2 to EV 19.5 Other displays: Over- and under-range signals; memo-
Ref lected: EV 1 .0 to EV 22.5 with 40o receptor ' ry marks (up to two); analyze function indicator;
Viewf inder 10" il; EV 2.2 to EV 23.7 with highlight, shadow, ohd average calculation marks ' or
Viewfinder 5" Other: Analyze function for metering ambient and
Measuring modes: f lash light together; Aperture-priority measurement "AMB l": For ambient light readings of ambient and flash light; Infrared remote triggering "CORD": For electronic ffash, M-class flashbulbs of any f lash unit using optional lR Receiver-Trigger;
with or without ambient light; using f lash unit's wireless data transfer to Minolta (Maxxum) 7000
sync cord or optional Sync Cord II and 9000 cameras via optional Data Receiver D R-
"NON.C": For electronic flash with or without 1 000
ambient light; trigger cord not required Power source: One AA-size 1 .5-volt alkaline or
Multiple/cumulative readings: Possible with incident carbon-zinc, or 1.2-volt nickel-cadmium for measure-
or ref lected light readings of ambient or f lash light ment and display; one 6-volt alkaline (4LR44, Eve-
Repeatability: 10.1 EV ready 537 or equiv.) or 6.2-volt silver-oxide (+SR44,
Eveready 544 or equiv.) for infrared data transmis-
sion
Dimensions= 28 x 68 x 153mm (1-1 /8 x 2-1U16 x 6
' in.) ,
Weight: 2009 (7-1 116 oz.l without batteries
Specif ications subject to change without notice.
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