Light meters
Sedic MA-5 CdS meter User manual
User manual for Sedic MA-5 CdS meter. 10 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Sedic
- Model / document
- Sedic MA-5 CdS meter
- Document type
- User manual
- Language
- English
- Pages
- 10
- File size
- 5.6 MB
- Category
- Light meters
- Document date
- Not specified in catalog
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Page 4 · Read text
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Eoftery inserling:
( Remove the borfery comportent cover (t) ond
insert the mercury bolfery (2) 1.3 volt Mollory
PX-13 into fhe comporiment (3). Reploce lhe cover
firmly. The cover con be screwed out ond in with
o coin. The;l:':::-plus mork of the boltery must be , ' .oulsrde. , €ryI:
the diol (5) ot botlery f esting position (Morked
def lect , '!AL*1I' gJ:gI') ' The needle (6) w ill then
-ond stop oi lhe boltery checking gg*&-l @
ori the scol'e plote or move over the green dot.
lf so, the btttery is OK, but if the needle does
EL coml to-1he--gre_qn d-ot (z) , the btry.--- JLurl
be reploced by o new one.
odvisoble to set the switch diol (4) ot off position
(g) morked os 'OFF" in white os fhis prevenfs
bottery consumption in voin.
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speeds film Serting
(.Set DIN speed of your film ot the fllm - the theASA or
speed indicotor spot (9) of the film speed indicolor
window (l o) by rotoiing the shutter speed diol (11)
. using the smoll knob (t 2) on the diol.
When roloting fhe shutler speed diol, hold the meter
os Shown by o figure.
The ASA speed numbers in block ond DIN speed num -
bers in red con be seen in the indicofor window (10)
os the shutfer speed diol is rofoting.
Semirg odoptor numbers(Abbrevioted os AN):
{ This meler is designed lo serve for such different
purposes by interchongeoble odoptors os stondord
high sensitive meter, spot meler, telephoto meter,
TTL meler, wideongle meter, incidenl meler etc.
Eoch odoplor regulotes the volume of the light t o
CdS ond chonge the light occeptonce ongle of CdS.
So the sensilivity oreo of the mLter chonges depending
o'n the odoplor in use and if' the sensilivily oreo
chonges lhe mutuol relolions between scoles must be
chonged. To help this, oll the odopiors of M-A system
hove individuol numbers, ond by iust selting this
odoptor number (AN) in AN window the mutuol re-
lotion ond combinofion omong scoles is odiusted outo-
moticolly ond occordingly.
So occording to the kind of the odoptor you ore
going to 'use, lhe number of thot odoplor must be
*, _ _a" $.+,**_ r****OU* set in the AN window (13) . All' the odoptors hove
lheir AN individuolly ond the figures ore engroved
on the odoptor.View original page 4Page 5 · Read text
Toble of rhe AN for cdoptors:
Kind of Adoptor AN Purpose of the odoplors
No odoptor ll with wide ongle lens or for very dork
subiect.
Stondord odoptor 9 with slondord lens for normol subiect
Telephoto odoptor 7 with'.telephotg lenses such os l35mm, 200,mm
ond 3OOmm for 35mm SLR comeros.
Spot odoptor 6 with super telephoio lenses like 500mm for
35mm SLR comeros or to meosure lhe light
condition of very spot of the subiect.
lncident il To meosure direct light condition, from light
source on subiect.
TTI vorioble For light meosuring ihrough the lens of your
comero.
Set the AN of the odoptor in AN window (ts) ot red dot by rototing indicoror scole
(14) using indicoror ring (lS)-shiny geored ring.
The TTI odoptor hos no AN number on it ond in rhis cose the AN number must be
obtoined individuolly lhrough the comero ond lens to be used. The detoiled exolonolions
ore in the inslruction of TTL odoplor.
Seiting ond rernoving the odoplor:
( The socket of the meter hos boyonet mount for oll
lhe odopfors ond the mouniing of the odoptor is iust
eos y.
The socket (ZC) hos o red dor ond eoch odoptor hos
olso o red dot on the boyonet mount. Motch the red
dots iogether ond push the odoptor slightly in ond ro-
tole the odoptor unticlockwise unti I it stops with cl-
icking sound. This merhod of sefring odopror is oll rhe
some on oll the odoolors.
To remove the odoptor, first pull the lever (30)
down to unlock the boyonet m ount ond rotote the
odopfor clockwise until the red dots of both socket ond
.odoptor come together, ond put the odoptor off the socket
Using the meter:
{ Toke the meter ond rotote the swirch diol (4 ond
set the red dor of the diol (5) or H-mork (engroued
os "H " in red) if the subjecr is in bright lighr, or if
the subiect is in subdued light set the diol or the l-
mork ("1" in white) .
{ The needle will then deflect ond point to o figure of
H scole (tO) or L scole (lZ) .
.Reod off this figure ond tronsfer it onro the indi-
color scole (l4) ogoinst indicotor spor (tA) by roro-
ting F-slop doil (t l; .
lf the switch diol (4) is ot H mork, reod off o
f igure from H scole (16) ond if ot L mo* toke o
figure from I scoie (lZ).View original page 5Page 6 · Read text
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The occurote com bi nolion of shutter speecl ond
operlure setting (f-stop) con be obtoined on shutter
speed scgle (zo) ond the f-srop scole (2t)'
When using the meter with o movie comero the correct
combinotion of f -stop ond movie f ilm ing speed con be
obtoined on the movie scole (27) ond f-slop scole
(2t) .
lf rhe switch diol is sel ot L mork ond'the needle
deflects to rhe end of lhe scole, the sensiiiviiy is
too high for the subiect, resei the switch diol ot
H mork.
Exposure volue numbers ore shown in lhe E. V.window
,22]t. lf lhe comero in use hos on E. V. scole these
www.butkus.us numbers ore lhen directly tronsfered onto the comero
shutter selting.
Using needle slopPer!
( Becouse of the odoptors 'sometimes you con nol se e
fhe needle moving ond hove to reod the f igur e
pointed by the needle when lhe meter is nol in focing
posilion to the subject.
In such o cose, press the stopper butlon (23)
while you ore holding lhe m eter body f ocing lo lhe
subjecf or while you ore looking ot the subi ect
through viewfinder, ond the needle will stop ot ihe
position ond will nol move until your finger is off
from the butfon so lhot you moy reod off the po-
inted figure regordless of chonging of mefer posilion.
Hond Grip:
( Whenever you use hs6vy odoptors like spol or telephoto
odoptor, it is recommendoble to use hond grip. To
ottoch the grip fo the meter body, foslen the screw
(24) to the sockel (zs) flrmly.
of the needle:
( ITr-66- ,'ee.llE--it oul of I he pos i t ion of Z ero m ork
(26) when switch diol is ot of f m ork, odiust the : needle position by rolotinq Zero odiusting screty(28)--
use screw driver -- t" b" gEU ." Z-%44-View original page 6Page 7 · Read text
How to use eoch odoPtor!
( l. Wirhou odoPtor:
Wrthout ony odopior the light occeplonce ongle of CdS is obout 90" ond this ongle
is quite suiloble for light meosuring for wide ongle lenses'
Or if the subjecf rs In v-ery dork conditions, use the meter wilhout ony odoptor
becouse the sensilivity of the meler is ot lhe hrghest wifhout odoplor.
Be sure thot AN of non-odoptor meler ts I l, so set this number in the AN window
(rf) bv using indicotor ring (15).
2. Stcrndord odoptor :
< With this odoptor, the light occeplonce ongle is 50
degree ond this is quite suitoble for piciure toking
wilh slondord lenses. The AN of this cdoptor is 9,
so first of oll odiust AN number in the AN window
ot 9. }|
-t
3. Incident odoplor:
( lf you like to foke o picture of o subiect of which
light condition is extremely brighter or dorker thon
its bockground, for instonce copying, porlroit elc. it
is recommendoble to meosure the direct light from
light source insteod of reflected lightfrom subject.
./2 42 "il" in The so set is I1, AN4 the mount window ond the AN
incident odootor on the meler.
Ploce the meter directly toword
the light source but iust in evRo$; fronl of the subiect (olso iust
neor lo th.e subiect) , I hen push
the needle stopper bulton ond
reod off the figure on H or t
scole pointed by the needle.
4.Telephoto odoptor (Turret lype) 3
( lf you ore using long focol length or telephoto
lenses on your comero, the ongle of view of the
lenses ore much smoller fhon stondord or wide ongle
lenses. This odoptor i, tod" out for meosuring the
light condition for such felephoto lenses.
First of oll, ottoch this by boyonet lo the meter
body, then you will nofice this odoptor hos turrei
lenses. Six lenses ore fixed on the lurret plole,
ond omong the six, the three lenses ore used for
view f inder (morked "7.5:l35 etc.ond not tronsporenf)
ond the rest ore for chonging light occeplonce
ongle of CdS. One f inder lens ond CdS lens on opposile
side ore used os combinotion.View original page 7Page 8 · Read text
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\\_ lf you ore using l35mm lens with 35mm SLR comero,
17 .{f- for insfonce, lhe view ongle of ihe lens is
degree, so rolole fhe turret ond sel the finder lens
with morking "1Z:.l35 mm" lust in f ront of the finder.
The lens will be fixed with click stop.
Now the finder hos 17 degree of view ongle ond of
the some time the lens on the other side is sel on CdS
ond regulotes the light occeptonce ongle of CdS ot l7
degree olso outomolicolly.
Then look through fhe finder by one of your eyes
ond you con see o smoll white circle with mork
"l7:135 mm" which shows the f ield of view ot 17
degree. Then look ot the subiect by the other eye of yours, now you con see
both circle ond subiect by your both eyes, put them togefher in the finder ond thet^ CdS is occepfing light from the port of the subject surrounded by lhe circle only.
The eye sight of the finder con be odiusted, so rotote eyepiece until you will see the
l1 white circle cleorly.
Press the needle siopper button while you ore looking through the finde. ondl| doubling the circle ond the port of the subiect of which you like lo meosure exoct
light.ocndition, ond reod off o figure on H or L scole pointed by the needle.
Be coreful not lo hove thot port of subiect come out of the circle when you dep-
ress fhe needle slopper butlon.
For olher lenses with different view ongle, use other finder lens combinotion ond
you will see f rom the toble which focol length hos which view ongle. Select proper
lens combinotion occording lo the toble.
Be sure thot the AN number of this odoptor is "7", ond check number "7" is set
in AN window correctly or not.
Toble of View ongle, focol length, lype of comero ond film size.
View ongle Focol length of lens ond film size lo be useo.
l35mm w/35mm film, 200-30Omm w/6X6cm film, 3OO-40Omm
t7 w/6xgcm film & 50Omm w/Ax! inch firm.
1 r.5' 2O0mm w,/35^m film & 4OOmm *,/6X6cm film.
ll 7.5" 300mm w/35mm film & 600mm *,/6\6c^ film.
( Spor odgtor:
Sometimes, you need io know exoct light conditionil on o very spot of the subiect while you con olmost
neglect the light from the rest port of the subiect.
In such o cose, this odoptor is quite useful,
for inslonce, if you ore toking o prcrure
of building etc., ond you like to hove exoct exposure
on o port of the building, you hove to odiust your
ccmero exposure for thot porl only, then meosure
the light only from fhol port of bui lding ond odiusr
exposure occordingly, ond you will hove o piclure
of building with thot port exposed correctly olthough
other port of the picture will be over or under
exposed.
Th is odoptor is consist of 5 elements ond one prism,
ond hos very smoll view ongle of 3 degree
6
IView original page 8Page 9 · Read text
The light from the subject will reoch to CdS through
lenses ond prisrn ond ot lhe some lime be reflected
to the finder through ihe prism, this meons thot
the CdS is recdiving moin porl of'the light from
the subject while you ore looking ot the port of the
subiect lhrough reflex finder.
look into the finder ond you will see o block circle
which shows the oreo of the subiect to be meosured,
then put the port of the subiect lo be meosured in
fhe circle togelher, press ihe needle stopper bullon
ond reod off o figure on H-L scole pointed by t he
needle.
The figure will show you correci exposure of only
thot sopl of the subieci.
AN number is "6" for this odoptor', ond olso be
coreful nof to get lhe subiect out of the block circle
when pushing stopper butlon.
To odiust the eye-sight of the finder, rotote eyepiece
until you wi ll see the block circle most cleorly.
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< TTt qdoplor:
Nowodoy, there ore mony SLR comeros with so colled
TTL exposure control system, ond this is one of the
most occurote woy of light meosuriirg becouse TTt
system olwoys meosure the light from lhe subiect
through the lens, in other words, fhe meosuring
is done only ogoinst the light coming through the
lens to the f i lm.
lf your 5LR comero hos o different system from
such TTL or no exposure meler built-in, use this
TTL odoptor ond you con meosure the light Through
The Lens of your comero.
This odoptor is quite unique one ond different from others ond the AN must be
obtoined by yourself through your comero ond lens to be used.
However, once you obloined AN for rhe comero ond lens; you con use the AN
olwoys for lhot comero ond lens combinotion, ond it is not necessory f o obtoin other
AN unless you chonge lens or corero,
Before you mount TTL odoplor, put slondord odoplor on the meter ond odjust the
AN ot 9 (AN of slondord odoptor) in AN window. First select o subiecr which
is iust ploin ond even light condition something like whire woll or side of o building.
Meosure the light condition ot the distonce of oboui 3 feet from the subiect,
reod off the figure pointed by the needle on H or I scole ond tronsfer it onto
in{icotor scole ogoinst indicotor spot by rololing f-srop diol ond remember the figure
odiusted ogoinst indicotor spoi (the figure pointed by needle).
Then switch the stondcrd odoplor to TTL odoptor, but during exchonging of odopior
be sure not to movo olher port like diol, scole etc. qnd keep the figure of
indicotor sc ole ot some position ogoinst indicotor spot which wos obfoined. through
stondord odoptor previously.View original page 9From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
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