FUJICA ST801 User manual

3.5/28rnm LENS ST8O1

SPECIFICATIONS
3.5/28 mm LENS ST801
SPECIFICATIONS
Aperture/focal length EBC FUJINON 1 : 3.5 28 mm
Composition 7-component, 7-element
Lens mount P mount 426 P = 1
Filter size 49ö P = 0.75
Angle of view rc
Focusing range 0.4m - €
Lens opening Automatic: 3. 5, 5. 6, 8, 11, 16
Blades: 5
Helicoid
Turning angle: I42o
Direction of extending rotation:
Counterclockwise
Distance scale
ft 20, 10, 1, 5, 4, 3, 2.5, 2, 1.7, !.5,
1. 3,
oo
m 5, 3, 2, l-.5, 1. 2, L.0, 0.8, 0.6'
0.5, 0.45, 0. 4
Distanee/aperture index White ?
Dimensions Length: 38.5 ( oo ) 41.5 (fully extended)
Max. OD (Aperture selector ring): 58' 5
Weight 165 g

SPECIFICATIONS
3.5128 mm LENS ST8O1
'tå äE -# ,E t
EEåÄ.ffiAEEåE EBC FUJINON 1:3.5 281ftN
ffi IJX 7# 7&.
vvÅ -<, v IP-<rvl 42Ö P:1
74)vt-1+ 4e6 P:0.7 5
E[ fr t5
ffi.**q 6C€EW 0.4 m-oo
M9åfifit9: s.5, 5.6,8, 11, 16
Effi.&.#.: s
-'-U::4 1.. EHFtr: !42"
fRfi14ffirtfu: trffi;-+lEbfifiJ
EE*tr8ffi ft 20, L 0,7, 5, 4, 3, 2.5,r.7, 1.5, 1' 3,
5, 3, 2, 1. 5, 1. 2, L.0, 0. 8, 0. 6, 0.4, 5,
0.4
+E ffiM =\ å?
tå ääF:s8.s(m) 41.5(ffifr)
fr.f^E(ffi.bä):ss.s
Eb -i
ct65I

CONTENTS
3.5/28 mm LENS ST801
CONTENTS
I. DISASSEMBLY
1. Mount ring
2. Aperture
3. Helicoid
II. REPAIR AND ADJUSTMENT .
L. Focusing
2. Helicoid
3. Aperture
3-1. Adjustment ...
3-2. Repairing aperture blades jammed with oil
3-3. Repairing aperture seat
3-4. Repairing levers in mount ring .
4. Aperture selector ring
4-L. Deformed aperture selector ring (78)
4-2. Cam ring (71) does not operate smoothly
5. Aperture transmission Pin
NI. INSPECTION
IV. PARTS LIST .
V. REPAIR TOOLS
1
.)
J
5
5
n
I
11
11
15
t7
19
2L
2L
2t
o.)
25
26
29

CONTENTS
3.5128 mm LENS ST801
E
A MryfiR
1. -?, Y IES
2. ffi b DfRg[
3. -\ , r 4 i.'EF
1
J
D
4bwffiM.ry+F,
1. c y r=iffi#
2. -\ , :" 4 l'ftfu$ F"
3. ffi9ZÄH.
3-1. ffi. b -=,8M.
3-2. äfR#
3-3. ffiMa(FtuTB.
B-4. -< I v l. E[A*[o-i€ 0) v ,: - F56 orcfuTR-
4. ffi. b w(FffiZÄa.
5
7
4-r. ffi.9WaAtu'e(FfuZÄE
4.2. rtar):z/a(FgJTR-
11
11
15
77
19
21.
27
27
23
s. ffibäll\ffi^Et t v 2
r[.,fi.&qfF 2s
M. *[ tr? *.
v. sffirR 2e
26

DISASSEMBLY
3.5/28 mm LENS ST801
I. DISASSEMBLY *ffigfH
I. DISASSEMBLY
L. Mount ring
(a) Remove three screws (77) and remove the mount ring assembly (38).
(b) Remove the ring (?9) by the use of a pin-face spanner, and remove the aperture
selector ring (78). Be careful not to lose the steel bal.l (73).
(c) Remove two pins (76) and remove the cam ring (71).
(d) Remove the clip (39), and remove the rotary lever assemblies (40) and (45).
I. A M W fiE
1.-<ey t*$(38)
(a) JL-^, (77 "' ) tFfL= v;, l.#( 38 ) äryHJ-.
(d fi=83:/,:xt+ry.-H(79) tNl-ffibW(7 8) äryHt.
(c) &6)tv (T 6*') ty\r-n ^ t v 2" ( 7r ) äryHf "
(al rL.1ffi ( Ss ) k^l-gffit,"{-*$ ( 40, 4 5 ) äryHf.

DISASSEMBLY
3.5/28 mm LENS ST801
W ,\
// -',^a res \
@d@^
'@rA
ä ,u ((ve
o
o

DISASSEMBLY
3.5/28 mm LENS ST801
2. Aperture
(a) Remove the name ring (2) by the use of a remover (L37-TA - For ST?01 t. B/55, .
(b) Remove three screws (13) and remove the filter ring (1-4).
(c) Remove three screws (77) and remove the mount ring assembly (38).
(d) Remove the front lens assembly (3) and rear lens assembty (80) by the use of
pin-face spanners (L3-TA1 - For ST?01 3.5/28) and (L6-TA1 - For ST?01
3.5/28) and remove the aperture/helicoid assembly (15).
(e) Remove two screws (32), and remove the pin assembly (29).
(0 Remove two screws (1-6), and remove the aperture seat (18) and aperture blade
assembl.Y (19).
(g) Remove three screws (33), and remove the ring (22).
2. ffi9årfE*[(1e)
(a) råL3 7-TA1 -cfft bfN( 2) h^-f "
(b) rLit ( L3 " ) t^l-z -r )v4- t) v ? (t a )t^t"
(c) 1-(a)K Jb-?r>/ | *[ (38) äryHf.
(d lt = / z7 zii<fBfr**[ (3 )låE*[ (80 ) ?_ryl.
(e) t:i, (32"2) kilLi49!ffiS[ (zg) äryHJ".
(f) rL^.t (16") k^vffiM ( re ){^9åffi*[(1e)äryHf"
(g) l:i, (33'u) t^ Lz"'t-:P (zz) äryfrJ-.
Helicoid
(a) Remove the aperture/helicoid assembly (15) as described in 2-(d) above.
(b) Remove four screws (25) and remove the focusing ring (27).
(c) Remove four screws (16) and remove two helicoid guides (34).
...r.) :4 h"*[ (23)
z -(a)-k)a+)lRt^ U = 4 l"*[ (zs) t$-t:r."
rLi, (25"n) t^U<EE-fl'trW(27 ) t^t"
rL|'t ( 1 6 *n) k^l'(^ rJ = 4 l'. li 4 f" ( 3 4 "') k^t"
J.
(a)
(b)
(c)

D ISASSEMB LY
3.5128 mm LENS ST801
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ili|
IJ,
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u^(-
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e l-/
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o
o

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
1.
III. REPAIR AND ADJUSTMENT TEISFEHFfF
II. REPAIR AND ADJUSTMENT
Focusing
(a) Remove the name ring (2) by the use of a pin-face spanner (L37-TA1 - For ST701
1.8/551
(b) Remove three screws (1'3) and remove the filter ring (14).
(c) Select a camera body having correct flangeback, and set shutter speed to I'B'r by
the use of a cable release.
Mount the lens on the camera bodY.
place a base plate (KL35A-AOGA1-) on the base of a collimator, and install the
camera on the base Plate.
(d) Loosen four screws (25) and watching focus in the collimator, properly turn the
male helicoid (28) to adjust flangeback.
(e) Retighten the four screws (25) and lock the screws with screw locking agent.
CAUTION: Be careful not to put the screw locking agent to the thread on the
helicoid (28).
(0 Reinstall. the filter ring (1-4) with three screws (13) and lock these screws with
screw locking agent.
(g) Reinstall the name ring (2) by the use of a pin-face spanner (L37-TA1 - For
sr?01 1,. B/55).
Ibw-åBW.*fiE
t y | -iffiM.
(a) rF-L3 7 -rA1 "effi 9W ( 2)kt\J"
(n) rL^t (13,')b^l-z.r )v2- \ / r" (t+) äryHf.
G) 7, v9,i v tafr'Cvtbh / rrr:f 4 [affiEfrkw.b2tr]bo Laffi'Z'J-)r ] t'Ff 't4FlJ
Iåv t) - Åv 4 + -blfr-ffi\-<, 'v+ 11 4 -7' C- l" * B" l[c(å- ( ' å"
6.trc=, / - raäffi.aE-Hsffi. (KL35A-AOGA1) äEå fi t 7k+v l'f å"
(d vyÅt^ 4 -oc y lif_nftrt\b, it (25)*4 fuz*v>'ct ffi^ tJ :r 4 l'. (28) ä18
l-'C z, :z')'\ > 2 k=6HM.-f b"
4t (25)"n kffik\4ttd' å rE[rc^tu'> 2-f b"
--. U = 4 l.';?{ -tVc^ ) p v t ?_ftAår'&feiIHf ba L"
7 4 )v, - t) v / (14) hit (13)*3 'citrJ:k5-f b" l')a t t Ifrffia'Lo
ffi bW (2) kIF-L 3 7-T Ar t{frffi1-{ + tilt-r"
u.
1.
(e)
(f)
G)

REPAIR AND ADJUSTMENT
3.5128 mm LENS ST801
Fis. 1
o
Fig.2
o
Fis. 3

REPAIR AND ADJUSTMENT
3.5128 mm LENS ST801
2. Helicoid
When the helicoid does not turn smoothly and equa[[y, repair it as follows:
(a) Disassemble the helicoid assembly as described in the I-2 and I-3 above.
(b) Thoroughly and separately clean the male helicoid (28), helicoid ring (35) and
female helicoid (36) with Trichlene.
After cleaning them with Trichlene, lightly lap them with machine oil such as
spindle oil. Be careful not wear them during the lapping.
(c) Clean them with Trichlene again and after drying them, put helicoid grease
(Losoid grease 6304-4'). Now, reassemble and turn them many times, and
completely wipe out grease come out from them.
(d) Reinstall the male helicoid (28), helicoid ring (35) and female helicoid (36) so
that they are positioned as seen in Fig. 4, and install the two helicoid guides (34)
with four screws (16). Be sure to lock the screws with screw locking agent.
2. --.u=4r(FfuT*_
--.U= 4l(F6)+trc, z7 (
Bä, ttr a+tffiac LbtYt b"
(a) hM+18 2.(a)_(g) trc t. b
(n) lF^ ! .' 1 l.' (28) ,
'6.rtit'öt'&t h"
-".U=4\-"hWth"
t):t 4 t'ä (SS), ffE^, r 4 i.'(36) ä&<.tå.f L( t t) , vy
€toaåht o ), nf ) ( R+r/JiE^€ ), a u 4S/r4.1-<v1b
-öa'#'{A, zc y r")vTfiSof#t$tHfffi ( ) y 7'-f ao /j 4tr(t_h.v^t#vciI.åJäaL"
(") l r t v/'&'e, ffi;##,1*'&.5 2,5 3,5 4 lt'e-' t) :r 4 l.' t' t) ^ ( o t' 4 l 2 t) z
6 3 0 4 - 4 ) k'6b, &k kitL4, +^,<EffiA-U0d4frt-f<? )) zäåå å å"
(a) Fig. 4a(i.Effi1lKt/e 2 8,3 5,3 6t rzy l. L{, --: u::4 t'rt.f F'(34)'2 k4,
(16)'4 -c4trj:btbo i)a v 2Lfr-ffiaaL"
(e) With the relative positions of the parts maintained as seen in the Fig. 4, install
the focusing ring (27), and secure it temporarily with each four screws (25) and
washers (26). Completely tighten and lock the screws with screw locking agent
after adjusting flangeback.
(0 Install the ring (22) on the male helicoid (28) with three screws (33) as seen in
Fig. 5, and lock the screws with screw locking agent.
Fie. 4a#.ffi.-f EEBE# (27) k/.$i€-(, ^t (2s"4 ) Kv v v + (26"4 ) är.Jj€(
i t rLöt b" ( ö ODtflqftdftr1tö, 7 2 y ),i t t--BE#'lA+ffih51,, 4 -ts y 2-fb" )
ÅE^ u = 4 t" (28) t<4"#*.ry (22) ki, (33)"3 -e itfibf bo i')a v tLf.ffi
2 2 aw.tt rrI affi.trffiffihJ Fi g. s t< I bo
(e)
(f)

REPAIR AND ADJUSTMENT
3.5128 mm LENS ST801
Fig. 4
Fis. 5

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
(g)
(h)
Install the aperture blade assembly (19).
Join the aperture seat (18) and ring (17) with two screws (16) and lock the screws
with screw locking agent.
Install the pin assembly (29) on the aperture seat (18) with two screws (32), and
tock the screws with screw Locking agent. (The aperture seat (18) can be seen
through the long groove on the male helicoid (28).) Thus, the aperture/heticoid
assembly (15) is assembled completely.
Join the aperture/helicoid assembly (15) and mount ring assembly (38) with three
screws (77), and lock the screws with screw locking agent.
When joining them, correctly fit the pin (31) into the grooves on the rotary lever
(43) and beLlcrank (67).
&,trfFg[(1e).u äftEåtu"
HB (rs), F +:x..r,-S (t7) Z/&"L4, i t (16)'2
tE^ U .1 4 1.. (28) aFXr. b nÅ-äffiM (ts) te ,
ft'göf b" ^9a.y t-f ä"
rFfuEB (rs) ätrI.
(j) rcgJEB (15) & -< ' 7l's[ (3S) ä' i t (77)"3 -eit s v 2t bo
nr$tt'c^tp y 2(fr.ffia 2L.
aoffi, åfuffi (31 ) ä, EEvtt- (43) &.cA-i,4, t r:/ t (67 ) oFHlcffiäA€-a"
(r)
(i)
G)
(h)
(i)
-e4rrLk5th"
HåJffiSI (2e) k i t (32)"2 c i t

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
x2
-r
lJ9
Fis. 6
Fig.8
Fis. 7

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
o
.i. Aperture
3. 1 Adjustment
i(* Iz( F.
3. 1 ffi.båEM
(a)
(b)
(c)
Set the aperture selector ring (78) to rrF16r?, and set the pin (62) to 5.9 mm
from the flange surface by the use of a repair too[.
Properly turn the fing (22) so that the minimum aperture (F16) is circum-
scribed on a 2.03 mm diameter circle as seen in Fig. 10.
Next, insure that other F- stops are within the permissible ranges by the
use of a scaled magnifier.
When the minimum aperture diameter is correctly adjusted and other
F-stops are not satisfied, readjust the diameter within the range permitted
for F16.
(a)
(b)
(c)
ffib €v (62) kz, / tffirt'b 5.9ranvc+ v | -f bo
-offi, ffi.b#(ze) idF L 6Vc€ v l' L(å'( "
ä,J.& b'rEi.FL6) äFie. L0aia< 2.0 3d onrc&"f at*rc2" +jPh) (22) t@
b l--c-="H#t h"
I-fi' b :{At{c, &F iErr-#ä ff6,Wr,e }.= -c v\ A a L tM=Åf A o + 7''/ - *ft *- -{'fFffi
F 1 6 kz.o z6r,<F :lAt#.rc--6HM.I-<, fifuaFItäiffi,E l-u v1ffiidF L 6a#tr-gl

REPAIR AND ADJUSTMENT
3.5128 mm LENS ST801
Fig. 9
Fig, 10
Fis. 1 1
DS Permissible range
Döa+äffiffi
5.6 s.266 6.69ö
83.68d 4.66ö
ll 2.s8ö 3.2't ö
16 r.82ö 2.29ö
When aperture is F3.5, the opening
should be true circle (circle of the
opening of lens barrel), and no
aperture blade should be seen.
Et ffitfr.( r: s.5 )fr-lFE (ffiP]fr#tttan) Lt t
b-f l,-c tffi, DtErr_E L<trtvatIfr.v\"
Flange surface
7 t v'rffi

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
(0
€)
(h)
(d)
(e)
(i)
(o)
Checking time lag
Mount the lens on a camera body, set shutter speed to 1,/1-000 or t/2ooo
sec., set the aperture selector ring to the minimum and focusing ring to
the minimum distance, watch the portion rrArr and aperture on a straight
line as seen in Fig. 12, release the shutter, and see if the 1st blind of the
shutter begins to run after the aperture is stopped down to the minimum.
Repeat this checking on the straight line on the portion "Bil and aperture and
insure that size of the aperture is the same as that when observed from the
ttAil side.
InstalL the front lens assembly (3) and rear lens assembly (80), and adjust
flangeback. (Refer to II-1- - Focusing.)
Instalt the filter ring (14) with three screws (13) and lock the screws with
screw locking agent'
Install the name ring (2).
Check the pin (62) for height from the flange surface.
(i) Free length should be less than 8. 2 mm.
(i1) When height is 8 mm, the aperture should be ful'ly opened'
(iii) When height is 5. 9 mm, the aperture should be stopped down to the
minimum.
(iv) It should be possible to push the pin down to less than 5. 8 mm.
Measure resistance of the pin (62) by the use of a spring balancer and
insure that:
(i) It is less than 300 gr. when opening the aperture.
(ii) It is less than 100 gr. when stopping down the aperture'
/ 4 ^. ' /t&"ä-f a
ffiflnkfi I t,Ff 4 IrcW.ftO'., + 't 4 - z' c - rt I/ 100 0-1,/20 0 0 sec K,
ffig61q111fr,J.iff b, E)EEE^ffitc-Ly I' Lr, Fig. r2aqn (#fiE& 9 L Affio-tr
ffi-|re E äEå, v t) - ÅL-<ft,J.ffi bt'effi.bL/"fd.:t{[<'> + v , -ftHrt\fr.bffi
f . å kw'#,t b"
x, Bffi1H{|rt'bffi.b rt\A ffi{AIJ/. b Hkffi.b L lE Dtå ä -e b b. L treåÅf b"
( x v r. Z<F. orFAR )
7 4 )vr- t) v/ (L4) k, it (13"3 )-f ,nr1tk5tao i,)s v 2aLL"
ffibffi(2)tjir[t-r"
ffi.b c v (62) a;EÄl-l ( 7, v tffi I b )
i ) å #p 8. znpnJ>)T
ii ) 8nna+, Fätr*tffirbb. L
iii ) 5.s nilnawtLhl, fi,J.& b ä'effi.b LÄ,-cv\ b a L
iv ) s.8TwD)T re+F t-4+ h a L
ffiy''ffi b t rffi.b L{.sut v €A id 100 gD-l.T EE--a&t ä
(e)
(r)
G)
(tr)
(i)

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
Fig. 12
Aperture
ffi.9
o
o

REPAIR AND ADJUSTMENT
3.5/28 mm LENS ST801
3. 2 Repairing aperture blades jammed with oil
(a) DisassembLe the aperture btade assembly (19) as described inI-2 above.
(b) Thoroughty clean all the disassembled parts with perchloroethylene and
remove oil.
(c) Wipe interior of the male helicoid (28) with a piece of paper or cloth im-
pregnated with perchloroethylene and remove oil.
(d) Reassembl.e the aperture blade assembly (19) in reverse sequence of the
disassembly, and adjust as described in II-3. 1-(a) through (h).
3.2 )r&ifr
(d hffiwffi, z.(a)_G)trc J. b ^Mt b"
(t) (a)le r 9 b'ffiI-zEBF"k, 'i - 2 o'&'ct^Ö.#t-<lhkwb *b"
(c) w^t) 3 4 t"(ze) a\ffik'i- ) "'&k4ttrIfcffi,(Nd.tn) -cÅålfi?_w.9*a"
(a) ,|W afia Jttrtr ( ftgv ( 3. 1 (a) -(tl) ie t 9 =iÅM-f z "