Film cameras
Pentax 6X7 Marine User manual
User manual for Pentax 6X7 Marine. 27 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Pentax
- Model / document
- Pentax 6X7 Marine
- Document type
- User manual
- Language
- English
- Pages
- 27
- File size
- 2.2 MB
- Category
- Film cameras
- Document date
- Not specified in catalog
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Page 3 · Read text
ASAHIPENTAXINTRODUCES
THEALL.NEWPENTAX6X7MARINE
THEFIRSTUNDERWATERHOUSING
EVERMADEFORAN IDEAL.FORMATSLR.
IT LETSYOUSEE
THIS FANTASTIC
,,WORLD BELOW''WITHCLARITY,
EASEAND RESULTS
NEVERBEFOREPOSSIBLE.
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voucan'nilln',ilnNow, for the first time in history, #:ilT;:Jl'JffiTlH::J::ll,;
for the ideal 6x7 SLR format: the Pentax 6x7 Marine.
The fish, the plants, even the vibrating currents
of the water itself are yours,
thanks to the superb Super-Multi-Coated
SMC Takumar lenses.
And becausethe camera you're using is the
Pentax 6x7 SLR, your underwater picture taking
wiil combine greater ease-of-handlingwith
more successfu I results than you've ever
before consideredpossible.
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- ! 'View original page 4Page 5 · Read text
Marine Features
Flash gun mount
Waterproof synchro connector
Shutter speeddial
Distancescalewindow ^ - Film advance lever -- ,F
Shutter release T-E
Right hand grip
Clamp (one of four)
Flash gun attachment
Exposed synchro connector
Front housing (for standardlens)
Left hand grip
Focusingknob
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Marine Features
Flash gun mount
Waterproof synchro connector
Shutter speeddial
Distancescalewindow
Film advancelever
Shutter release
Right hand grip
Clamp (one of four)
Flash gun attachment
Exposedsynchro connector
Front housing (for standard le n s l
Left hand grip
Focusing k
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Specifications
Basic Camera Asahi Pentax 6x7
Front Housing
For standard lenses SMC Takumarl6xT 55mm f/3.5
SMC Takumar/6x7 75mm f /4.5
SMC Takum arl6x7 1o5mm f /2.4
For f ish-eyelenses SMC Fish-eyeTakumar/6x7 35mmf /4.5
For macro lenses SMC Macro Takumar/6x7 135mm f /4
SMC Takumar 6x7l15Omm f /2.8
SMC Takum ar 6x7 /2OOmm f /4
Depth Capability up to 50 meters or 6 atmospheres(Skg/cm2)
Flash Connection X/FP (Exposedand waterproof synchro terminals)
Viewf inder with the underwater magnifierlviewfinder, image magnification in the 6x7
camera viewf inder is 0.6x. Field of vision same as camera.
Size 308mm wide x 246mm high x 245mm deep with standard front housing
attached
30Bmm wide x 246mm high x 21Omm deep with Fish-eyehousingattached
308mm wide x 246mm high x 290mm deep with Macro housingattached
Weight a p p r o x . 6 . 6 k g ( h o u s i n go n l y ) o u t o f w a t e r , 1 k g ( i n c l u d i n gc a m e r aa n d
55mm lens) underwater
Other non-corrosivealuminum alloy, sea water resistant paint, O-rings for each
of the joining parts,externalshutter speeddial and diaphragmring dial,
and distancescalewindow
Accessories gearsfor focusingmount and diaphragmring 1 each
(Note: Different gearsare required for different lenses.)
spareO-ring for main housing 1
underwater magnifierlviewfinder 1
O-ring grease 1 packView original page 10Page 11 · Read text
Assembly
2
F o c u s i n gM o u n t G e a r R i n g D i a p h r a g mG e a r R i n g
1. First attach the "open" focus ring around 2. Attach the diaphragm gear ring at a distanceof
the focusingmount. Then lay the focusing 12mm* to 26mm from the lens mount. The
mount gear ring on top of the open ring so position of the small window in the band of
that the gear teeth are between 38mm* and the gear ring is important - it should be
46mm from the lens mount side. Then tighten positioned over the f/8 stop.
the three small screws (see diagram). . Turn the focusingring and the diaphragmring
to check that both gear rings have been
attached squarely.
. Set the automatic diaphragm releaselever to
AUTO.
. lf the 55mm compensation lens (purchased
separately)is to be used, be sure to attach it This can be done very simply by merely before placing the camera into the housing. lining up the edgewith the printed numerals
in the focusingscale.
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Assembly 3 4 S h u t t e rS p e e dD i a l R i n g U ndenruaterMagnifierlViewf i nder 3. Place the ring over the shutter speed dial, and 4. Take out the ordinary viewf inder eyepiece, depressit fully. Set the red dot on the ring and screw in the underwater magnif ierl oppositethe X position on the dial, and viewfinder.0.6X magnification. tighten the three screws.View original page 12
Page 14 · Read text
Assembly
7. Pull the f ilm advancelever and shutter speed Insert the plug end of the synchro cord into
dial shaftsout as far as they will go. camerasynchro terminalsX or FP. Be
careful that the cord does not interfere with
any of the gears.
When usingartif icial lighting,alwayscheck
that the lightingis functioning properly.View original page 14Page 15 · Read text
Assembly
I
I
Settingthe Camerainto the Housinq(ll)
9. A lig n t h e r e d d o t o n t h e lo we r re a r sid e o f Af ter m aking sur e that the four univer sal
t h e dia p h r a g m r i n g g e a r w ith th e re d d o t o n h o o ks ar e f itted into the four exposed holes,
t h e d i a p h r a g m g e a r o n t h e h o u s i n g . I n t h i s o u s h in the slide fastener s
p o s it io n , t h e d i a p h r a g m f/sto p o n th e ca me ra Wh en the two slide fastener s ar e pushed in,
w i l l b e 8 . S l i d e t h e c a m e r a i n t o t h e h o u s i n g two holes are exposed. These two holes
s o t h a t t h e g e a r r i n g m e s h e s p ro p e rly with th e receive the two pins on the back cover of the
d iaphra g m g e a r r i n g h o u sing, thus pr eventing the cam er a f r om b e c om ing dislodged f r om its position. i
i
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Assembly
1 1 1 2 1 3
1 1 . Drop the f ilm advancelever shaft down so Before loading f ilm into the camera,see that
that it falls inside the advance lever of the it is functioning properly. For this, seethe
camera. instruction manual for Asahi Pentax 6x7
12. Clip the inside claw on the back lock lever seriescameras.Check the f ilm pressureplate
into the back lock of the camera. adlustmentsand the f ilm type dial, and see
13. Drop the shutter speed dial shaft down into that they correspond to the type f ilm being
the slot in the shutter speed dial ring. Turn u s e d ( 1 2 O , 2 2 0 1 .
the dial around, making sure that the speeds
indicated on the camera shutter dial
correspondwith those indicated on the
housing.
4 aView original page 16Page 17 · Read text
Assembly
.{
0peningandClosingthe HousingBackCover Caution
14. Before closing the back cover, check that After closing the back cover, go through the
t h e re i s n o d i r t , e t c . i n th e g ro o ve fo r th e procedure once again to check that there were
O -rin g , a n d t h a t t h e O - rin g h a s b e e n in se rte d no mistakes in assembly.
c o rre c t l y . T h i s i s a v e r y imp o rta n t ch e ck, so Then gently lower the whole assembly into water
b e v e r y t h o r o u g h . S p r e a d a th in f ilm o f th e for an air tightnesstest. lf any bubblesappear,
g rease s u p p l i e d o n t o t h e o p p o sin g f la n g e take the cameraout of the water immediately,
faces. When the back cover is to be closed, and recheckall clampsand the O-ring.
see that the shutter release arm fits in aoove Do not jump into water holding your 6x7
t h e a r m o f t h e f i l m a d v an ce le ve r sh a ft. a n d Marine camera,sincethis can be very dangerous.
t h a t t h e d i a p h r a g m r i n g d ia l o n th e b a ck
c o v e r i s s e t t o f / 8 . F i n a l l y , c l a m p d o w n a l l
f o u r c l a m o s .
Fish -eye lens ( 35m m ) , depth of 3m , 1/60 sec. t/g >
PHOTO by J. ONOZAw.4
1 4
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Flash Gun Adapters (Purchasedseparately)
The following adaptersare availablefor f itting
commercialf lashesto the f lashgun mount
on the housing.
. Adapters for Nikonos f lash guns (Sunpak
Marine 24 and TOSMARINE)
. Adaptersfor Rollei f lashguns, including
power suPPlYbattery (Rollei)
Standard lens (55mm), depth of 5m, 1/60 sec. f/8 >
PHOTO by J. ONOZAwAView original page 20Page 22 · Read text
Front Housing
t
l,'
I
E x i - l t a n ( l r n Ft 1r r tt t t H r t i t s rr r r l i . , : , ; i t i l l l
U n s c r e w t h e f r o n t h o u s i n g b y t u r n i n g i t c o u n t e r - S t r e t c h t h e o - r i n g s o u t f u l l y t o m a k e s u r e t h a t
c l o c k w i s e t h r o u g h e i g h t f u l l r e v o l u t i o n s ( i t h a s t h e r e a r e n o c u t s , e t c . A l w a y s r e m e m b e r t o
n o r m a I t h r e a d ) . g r e a s et h e O - r i n g s b e f o r e u s i n g t h e m . T h e y w i l l
W h e n a t t a c h i n g t h e f r o n t h o u s i n g , m a k e s u r e n o t l a s t f o r e v e r , s i n c e t h e y a r e e a s i l y c u t , e t c . ,
b o t h t h e O - r i n g a n d t h e g r o o v e a r e c l e a n W i p e a n d i t w i l l b e n e c e s s a r y t o c h a n g e t h e m
w i t h a l i t t l e g r e a s e S l o w l y r e v o l v e t h e f r o n t o c c a s i o n al l y
h o u s i n g i n t h e r e v e r s ed i r e c t i o n u n t i l t h e t h r e a d s U n d e r h i g h p r e s s u r e su n d e r w a t e r , e v e n a s i n g l e
" c a t c h , " t h e n g e n t l y t u r n i n t h e c o r r e c t d i r e c t i o n g r a i n o f s a n d m a y c a u s e l e a k a g e , e t c .
( c l o c k w i s e ) u n t i l i t h a s b e e n s c r e w e d i n f u l l y .
S i n c e t h e s c r e w p i t c h i s v e r y f i n e , d o n o t t r y t o * The cameradislikesany kind of moisture.
f o r c e i t i f i t b e c o m e s s t u c k a f L e r 2 o r 3 t u r n s W h e n r e l e a s i n g t h e b a c k c o v e r o f t h e h o u s i n g ,
U n s c r e w a n d s t a r t a l l o v e r a g a i n . W h e n t h e f r o n t w i p e i t d o w n w i t h a t o w e l o r c l o t h s o t h a t n o
h o u s i n g h a s b e e n p r o p e r l y s c r e w e d i n t o t h e d r o p s o f w a t e r w i l l f a l l o n t o t h e c a m e r a . A f t e r
h o u s i n g , e v e n a t h i n s h e e t o f p a p e r w r l l n o t f i t y o u h a v e f i n i s h e d u s i n g t h e c a m e r a , w i p e i t w i t h
in between them a d r y , s a l t - fr e e c l o t h
1 9View original page 22Page 24 · Read text
Accessories
Flashgun adapter
(For Nikonos f lashguns,
Gear rings SunpackMarine24, etc.)
A Selectionof GearRings
F or 3 5 , 5 5 , 7 5 , 1 0 5 ,1 3 5,150,and200mm
lenses
FlashGunAdapters
F o r R o l l e i f l a s h g u n s ( i n c l u d i n g p o w e r Rollei f lash gun adapter
s u p p l y b a t t e r y ) (witn power adapter unit)
F o r N i k o n o s f l a s h g u n s
A Selectionof 0-Rings
M a i n h o u s i n g O - R i n g
F r o n t h o u s i n g O - r i n g
Viewfinder
A n i n v € l r t e di m a g e M i r r o r F i n d e r w h i c h
s h o w s 1 O O %o f t h e p i c t u r e a r e a i s a v a i l a b l e
a s a s p e c i a l a c c e s s o r y f o r t h e M a r i n e
h o u s i n g . T h e M i r r o r F i n d e r h a s a
m a g n i f i c a t i o n o f i X a n d p r o d u c e s l a r g e , V i e w f i n d e r
b r i g h t i m a g e s u n d e r w a t e r .View original page 24Page 25 · Read text
Pleasenote:
1 . lf the camera is dropped or knocked about, 3/4 when photographing under water with
the shock may affect the preciselyadjusted lensesof the same focal length. So, many
pafts. people prefer the wide-anglelenses
When transporting the camera and housing u nderwater.
by car or boat, etc., they may be damaged, The SMC Takumar/6x7 SSmm f/3.5 lens is the
so always carry them separatelywrapped most suitablefor the 6x7 Marine.
in dry clean cloth. 5. Light scatterswhen it enters the water, so
2. Remove all 4 clamps when shipping the photographingwith your back againstthe
Pentax 6x7 Marine by air. water surface,you will be shooting with the
lf the clampsare left in position, the low light. The degreeof clarity of sea water
pressureat high altitude will causea vacuum differs greatly dependingon the locality.
to form insidethe housingwhich may Exposure readingsnear the surface of the
prevent the rear cover from opening on the water are much the same as those made on
ground becausethe inside of the housing has land, but for every meter of water, open the
not returned to atmospheric pressure. diaphragmby one stop to approximately
3. Although quality glasswith good heat compensatefor the difference.
conductancehas been used, it may still cloud 6. Besidesthe standard 55mm lens,we wou ld
over when immersed in cold water. Addition also like to recommend the SMC Fish-eye
of a dehydratingagent like silicagel inside Takumar 6x7 35mm f /4 lensfor special
the housingwill help avoid this problem. illusory effects,and the SMC Macro Takumar
4. The refractive indices in air and water are 135m m f /4 lens for u nd istorted f actuaI
different. The viewing angle is reduced to photography.
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Maintenance
n
G r e a s ef o r O - Ri n g s
M a i n t e n a n c eo f t l r e 6 x 7 M a r i r t e This greasefor the O-ringshas excellent
A f t e r u s i n g t h e 6 x 7 M a r i n e ( H o u s i n g ) i n s e a temperaturecharacteristicsand viscosityas
w a t e r , i m m e r s e i t f o r a w h i l e i n f r e s h w a t e r , w e l l , w i t h a f o r m u l a t i o nt h a t i s p a r t i c ul a r l y
a n d t h e n w a s h i t . resistantto seawater. Do not apply this
l n o r d e r t o r e m o v e a l l t h e s a l t c o n t a m i n a t i o n , greaseto parts other than the O-rings.
p a r t i c u l a r l y f r o m b e h i n d t h e g r i p s a n d o t h e r
o b s c u r e d p l a c e s , w a s h u n d e r a j e t o f h i g h
pressure water from a f aucet-
R e m o v e t h e c a m e r a o n l y a f t e r c o m p l e t e l y
d r y i n g t h e h o u s i n g
R e m o v e a n y d u s t o r d i r t f r o m i n s i d e t h e
h o u s i n g w i t h a d r y c l o t h , w i p i n g i t d r y b o t h
i n s i d e a n d o u t .
T h o r o u g h l y c h e c k t h e O - r i n g s o n c e a g a i n ,
g r e a s e ,a n d t h e n r e p l a c e t h e m i n t h e g r o o v e s ,
w h e r e t h e y m a y b e l e f t .
C l e a n t h e c o n n e c t i n g j o i n t s c r e w t h r e a d
b e t w e e n t h e m a i n a n d f r o n t h o u s i n g s . l f n o t
u s e d f o r s o m e t i m e , a l w a y s c h e c k t h i s t h r e a d
b e f o r e u s i n g a g a i n
In order to get the very best resu lts f rom
y o u r 6 x 7 M a r i n e , w e w o u l d l i k e t o s u g g e s t
t h a t y o u h a v e i t c l e a n e d p e r i o d i c a l l y ( o n c e
every two years) at any of our service
f a c r l i t i e s .View original page 26From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-10.