Zenith C User manual

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INSTRUCTION
MANUAL
V SES(1JUZII(1JE () BJ EDI N EIIIJE
S T A N K O IM PO RT
u s s p M
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The "Z nith-C" is o mirror type 35 mm film precision
merits of up-to-dote
inioture omero possessing oll the
meros.
mended for use by omoteurs to photogroph
portro its, groups, seporote sport scenes, etc. lt
used in reseorch institutes ond loborotories for
ing through vorious opticol instruments: for in-
comero con be conveniently used for toking photo-
Tnith-c" useso stondord perforoted 35 mm motion
in length. This is sufficient for mok-
24X50 mm in size.
pictu obout 1.6
m
Ing 36 exposures
mero con be used for photogrophing under poor
nditions or in full dorkness os it is odopted for
with o
permits
losh bulbs. A controlloble synchronizing mechonism
odvonced scole ronging from 0 to 25 millisec.
hotogrophing with flosh bulbs of vorious types.
Th
lightin
use of
The
the mi mero is of the mirror type. The imoge thrown by
onto o frosted gloss surfoce is viewed through on
eyepte e oxis of which is porollel to the lens oxis. The
viewed ge is direct. The eyepiece mognificotion is !x. The
fielC vi$on seen through the eyepiece is 20X28 mm.
The
zlnes co rhi ro hos been designed for use with metol mogo
open outomoticolly upon closing the comero
c
cover.

The comero is furnished with o curtoin-type shutter giving
outomotic exposure speeds ronging from ln to lsn sec. The
o'B"-hond exposure setting is employed.
The comero mechonism mokes long ",{" exposures possible.
The shutter is coupled with both the film odvoncing mechonism
ond the outomotic film counter, so thot winding the shutter
outomoticolly tronsports the film ofter eoch exposure ond the
film counter indicotes the number of exposure token. lt. pre'
vents occidentol double exposures on the some port of the
film.
The shutter releose is interlocked with the mirror lift to
prevent eutting-off of the pictures due to the negotive field
being not fully open.
The comero provides o possibility of relooding in ordi-
oory, but not too bright, light.

t50$il
Size of film
Size of picture .
Film mogozine copocity
"lndustor-22" or'ilndustor-50"
cooted lens:
focol length
full o
pertu
re
Lens opening scole .
Distoncescole
Shutter exposure speeds .
Synchronizing
mechonism
scole. .
Comero overoll dimensions .
Comero weight
35mm e
e
24X36 mm @
r
36 pictures
50 mm
r/3.5
3.5;4; S.A;A; U; lO
0.65 m to infinity
r/zai rlsoi r/tooi r/zsoi
l/soo
sec., Bulb ("8")
ond Time ("4")
0 to 25 millisec.
78X90X138 mm
630 E
e
e
o
6r

The mirror-type view-finder diogrom is shown in Fig. 1.
It operotes together with comero lens I ond consists of
swivel mirror 2, plone-convex lens 3, the plone surfoce of
which is frosted, pento-prism I ond triple-lens eyepiece 5.
With the mirror in its upper position 21 the comero gives
on inverted imoge on film plone 6. With the mirror down,
the imoge is received on the frosted plone of lens 3. The
imoge shorpness on the frosted lens 3 plone is just the
some os on the film plone. The inverted imoge of the subject
given by the comero lens is ogoin inverted by mirror 2 ond
prism 4, ond comes to the eye through eyepiece 5, os o
stroight imoge.
To wind the shutter turn the shutter winding knob I
(Fig. 2) os for os it will go in the direction indicoted by
the orrow engroved on the top cover. At the some time,
this will move the film, lower the view-finder mirror, wind
the shutter ond bring into oction the snop-shot counter,
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t - comero lens;2 - swivelmirror;3 -
plone-convex lens with frosted plone surfoce;
,f - pento-prism;
5 - triple-lenseyepiece; 6 -
film plone
z'.
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The snop-shot counter
its knurled end in either
is reod off by meons of
upper side of the comero
shutter wound uo.
The shutter is releosed by pressing the releose button tI
which hos o conicol threod to'occommocrote o coble releose.
The e.xposure
sp"eds're chonged by o rittl; lifting ond turrr-
ing the exposure setting ring l2 until the index !ine l3 ns
opposite figure indicoting the desireci speed. The ring lz
Toy be turned only through the port of the scqie morked
B, 25, 50, 100, 250, 500 ond bock.
d
ioI 9 is set ot z?ra by rotoirng
direction. The number of exposures
block pointer l0 engroved on the
. Set the counter ot zero with the
Do not turn it in the intervol between B ond 500
10

To r,n;,nci
the iilm bock irrio the mogorine, with the shutter
releosed, turn lire ring 7 so thot the point engroved on rt
rnov€s to,.vords the letter "n" to o stop. Then, wind the filrn
by rototing the filrn rewinding knob l5 irr the direction indi
coted by the orrow'. Tlre knob should be rototed urrtil the
for',;e required to rotote is decreqsed. This shows thot tl-,e
iilrrr hos beerr fully rewouncj or:d is cornpletely irr the
frlCj9oztne,
The !ens is tightly screwecj into the ring ond hos the
nroLintii-rg
l9 (FiS.3) with the distor.rce scole. Tlre distorrCe
set is s
how'rr by the recj i ndex 20.
ilre lr:ns opening con be chonged by rototing the obieC-
irv*r frcnt rinq 21 unt!l the necessory division comes ooposite
the irrdex point 22. For converrient chonging of the lens open-
ing tlrree lens opening scoles ore engroved on the ring
21. They hove tlrree correspond ing index points 22.
fhe iens design e'robles lens operrinqs to tre set with
irlt.rrs ofr.
The lerrs is provided with the depth of freld scole 23.
ilre deptlr of field is the distonce between tlre neqrest ond
iiie icrr.tl',est
objects in o scei:e which wiil be shorp in the
;icture The depth o( field irrcr.ecses crs ilrs lerrs opening
,; rnode smollet, et os the disto;-rce
focused upon is irrCreOSgd.
Fig. 3.
1- lsnsj 7 - ody,isting rirrgi ll - shurter reieose button;
l4 plug socket; l5 fiinr rew.inding knob; 16 - synchron-
izinE lever; 17 syrrchronizotror.r
scole; 19 distonce scole
rirrg; 20 distonce scole poi.rter; 2l lerrs {ront ringr 22 -
!ens opening scole pornter; 23 - deptn of field scole
11

When it is necessory to Pho'
imoge will be sufficientlY shorS
The flosh sYnchronizing me(
o ronge of 0 to 25 millisec.-, P!
bulbs-of onY tYPe. The bulb i
meons of the socket 14. An
device is fixed to the bottom
of o brocket ond the triPod :
types differ in the flosh durot
ooproximotelY to one holf of
closes. This volue (in milisec')
bulb certificote, should be se
17 by turning the lever 16 un
if'" -cott"tpon'ding division of the scole'
Ii
l
r8
ring; 25
nut; 26
eyelets;
Fig. 4.
objective fostening
comero triPod
lotch
i 27
28 lotch ring
14

n
The bottom cover jt olso provided with lotch 26 lor locking
the cover ond ot the some time openint -tr," slit in tnl
mogozine.
. T9 open the bottom cover, turn the lotch ring 2g counter-
clockwise so thot the orrow on the totch points t5 the "n!r"u_
ing "orKp", Th-e_n
ope! the cover.. Mogozine 36 (Fit. 5i-;;;
toke-up_spool 30 ore fitted roosely into- the comero ond con
be eosily removed.
Filters to be used with this cqmero should hove mounting
threod size of 33Xo.s mm ond on externol diometer o-f
36 mm.
{a
30
36
trock
Fig. 5.
toke-up spool;
mogozine;
C film
I
15

The mogozine 36 consists of three
ports: cose 31, cortridge 32 ond spool
33 (Fig.6). To open the mogozine,
press the button 34 ond give the
cortridge o holf-turn clockwise until
it comes freely out of cose 31. After
this spool 33 con be removed' The
subsequent looding operotions should
be corried out in red light or in
complete dorkness, depending on the
type of film used. Cut the end of the
f
ilm ond, holding the spool with its
heod inwords, poss the end of the
film through one of the spool slits
ot its wide side. The sensitive side
of the film should foce downwords.
Bend the end of the film protrud-
ing from the opposite (norrow) side
of the slit ond poss it into the norrow
side of the other slit. Then fold the
very end of the film three times ond
pull the film so os to wedge the
folded end in the slit.
Fis. 6.
31 - mogozine cose; 32 - mogo-
zine cortridge;33 - mogozine spool;
34 - mogozine button; 36 - mogozine
16
fl
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After this, continuing to hold the spool with its heqd in.
words, rotote it counter-clockwise, winding the film with its
sensitiveside inside.
Wind the film tightly onto the spool.
N o t e . The film should not be tightened by holding the
spool ond pulling the film by its free end os this moy
scrotch the sensitive loyer os o result of friction between the
turns. Do not touch the sensitive side of the film with your
fingers.
Insert the spool with the film on it into the cortridge, so
thot the spool heod posses through the bottom of the cor_
tridge, Insert the cortridge into the cose, teoving the end
of the film protruding out of it ond rotote the cortridge in
its cose counter-clockwise, hotding the mogozine with its
heod inwords, until the lotch locks.
All subsequentoperotions with the mogozine con be cor-
ried out in ordinory light.
I
I

tf
1. To engoge
the comero
mechonism,
turn the releose button 11 ond the
ring 7 until their points coincide with
point on the comero top surfoce,
2, Test the operotion of the comero
wind
ing the shutter by turning the
knob I ond releosing it by pressing
the button 11.Toke o look through the
eyepiece to see whether the mirror
system is working properly.
3, Then, open the bottom cover ond
toke out the toke-up spool 30.
4. Drow the film end out of the
mogozine to o length of 9 or 10 cm
ond cut it corefully to o shope os
shown in Fig. 7.
5. Holding the toke-up spool 30 in
your left hond ond the looded mogo-
zine in your right hond (see Fig. 7)
fix the end of the film under spool
spring "f[". Toke core thot the uncut
side of the film lies closely ogoinst
the spool flonge.
6. Holding the open comero with
its lens outwords, os is shown in
Fig.7, insert the film into the film
trock "C" by lowering the spool ond
the mogozine evently into ploce, ll
the mogozine does not slide properly,
film rewinding knob 15 should be
turned o little until it does.
Fig. 7,
30 - toke-up spool; 36 - moqo-
zine; C - film trock; f[ - toke-up sp6ol
spring
ic'
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