Camera accessories
Bronica SQ-a bellows User manual
User manual for Bronica SQ-a bellows. 28 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Bronica
- Model / document
- Bronica SQ-a bellows
- Document type
- User manual
- Language
- English
- Pages
- 28
- File size
- 1.8 MB
- Category
- Camera accessories
- Document date
- Not specified in catalog
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Page 3 · Read text
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PleaseRead Before Use!
The Automatic Bellows Attachment S has been developed for the purpose of
providing greater lens extensions than possible with the unaided Zenzanon-S
lenses from 50 mm to 250 mm, by simply using the accessory between the
Zenza BroniCaSO, SO-A or SO-Am camerabody and the lens.
The accessorynot only provides continuously variable lens extensions,from
53 mm to 153 mm, but there is no loss of automatic lens diaphragm action and
electronic shutter action in the lenseswhich are attached in this manner. This
means, of course, that operations are identical to that without the accessory,
which means that operationsare equally simple and trouble-freeeven when the
accessoryis used between lens and body.
Finally, for even greater pleasure and complete freedom from troublesome
exposure calculations,the use of the MF Finder S, ME Prism Finder S or AE
Prism Finder S is specially recommended becausemanual exposure operation
or complete exposureautomation is retainedeven when the Automatic Bellows
Attachment S is used.
Pleaseread the Instructions through completely before you use the accessory,
as you will then be able to use the accessorywith greatereaseand more satis-
faction.View original page 3Page 7 · Read text
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- | q t : - 1 l
SpecificatiJnt
Camera Zenza BronicaSO, SO-A or SO-Am
Lens Zenzanon-SLenses(50 mm to 250 mm)
Extensionof Lens 53 mm to 153 mm
Extensionof Bellows 100 mm
Magnifications 50 mm Lens: 1.05x - 3.18x
80 mm Lens: 0.64x - 1 .98x
105 mm Lens: 0.51x - 1 .65x
1 50 mm Lens: 0.36x - 1 .17x
200 mm Lens: O.27x- 0.88x
250 mm Lens: O.22x- 0.73x
FlashSynchroSocket Availableon lensmount plate (f lashsynchrosocketon camera
body becomesinoperable)
Other Features Shutter operation is completelycoupled to camerabody for
shuttercockingand releaseactions;MF FinderS, ME Prism
FinderS or AE PrismFinderS is alsocompletelycoupled.
Dimensions 86 mm (width) x 1 55 mm (height)x 21Omm (length)
Weight 1,550grams
Accessories Camerabayonetmount cap - 1 piece.
Lensbayonetmount cap - 1 piece. ' Flashsynchrosocketcap - 1 piece.
@View original page 7Page 8 · Read text
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1 "
A t t a c h men t a n d d e t a c h m e n t is lf th e co ckin g p in i s not set to 1. When attaching the cam er a
n o t pos s i b l e u n l e s s t h e c o ckin g the green-colored dot on the body to the Automatic Bellows
p ins o f t h e c a m e r a b o d y , le n s camera body, revolve the film Attachment S, be su re that
a n d A ut om a t i c B e l l o w s A t ta ch - win d in g cra n k. camera mou nt plate of the
ment S a r e a l l i n t h e " c o c ke d " lf th e co ckin g p in s ar e not set accessory is at its very rear end.
c o n d it io n . between the green-colored dots
T h e c oc k i n g p i n s w i l l b e s e t to and red-colored bands in case of * T he attachm ent or detach-
the green-colored dot in case of lens and accessory, rotate the m ent of the cam er a body and
camera body, and located be- c o c k i n g p i n s m a n u a l l y ( b y h a n d ) lens can be in reverse order
tween the green-colored dots to th e p o sitio n . as have been explained in the
and the red-colored bands in Th e fo llo win g in structions ar e f ollowing par agr aphs.
case of the lens and accessory based on the "shutter cocked"
when they are in the "shutter co n d itio n .
c o c k e d " c o n d i t i o n .
oView original page 8Page 10 · Read text
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Attachment 3. 4. of l-ens
Wh e n a t t a c h i n g t h e l e ns to 1. When detaching the camera 2. Rotate the film winding
t he ac ce s s o r y . f i r s t , ch e ck body from the Automatic Bel- crank and cock the lens shutter,
wh e t h e r t h e c o c k i n g p i ns a re lows Attachment S, be sure that in order to detach the camera
located between the green dots camera mount plate of the ac- body from Automatic Bellows
and re d b a n d s . T h e n , a l i g n th e cessory is at its very rear end. Attachment S.
orange dot on the accessory
wit h t he r e d d o t o n t h e l e n s a n d
in s e rt t he l a t t e r i n f u l l y . T h e n ,
ro t a t e in t h e c o u n t e r - c l o ckwise
direc t io n u n t i l i t s t o p s w i th a n
audib le c l i c k i n d i c a t i n g th a t
it is securely attached.
oView original page 10Page 11 · Read text
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3. In order to detach the acces- 1 . S in ce th e co ckin g pins of the 2. Then, depress the lens re-
sory from the body, press the a cce sso ry will re tu rn slightly in lease button, in the ar r ow-
le n s rele a s e b u t t o n ( o n t h e le ft th e re le a sin g d ire ction, upon indicated dir ection, and, at the
si de o f t he b o d y ) d o w n a n d, a t detachment f rom the body, sam e tim e, r otate the lens in the
the same time, rotate the acces- mo ve th e co ckin g p ins to their clockwise dir ection until it
so ry in t he c l o c k w i s e d i r e c tio n p ro p e r lo ca tio n s with you r m akes a full stop, at which
un t i I it ma k e s a f u l l s t o p a n d fi n q e r. point it will be possible to
can be detached. detach it.
oView original page 11Page 13 · Read text
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4. Th e t r i p o d m o u n t r a ck 5. For focusing the su bject at 6. See "Extension" on page 14
sh o u ld b e m o v e d t o t h e c e nte r a p re d e te rmin e d ma gnification, for the required extension and
of gravity of the equipment, move the complete set-up for- then set it to the extensionscale
w it h rire t r i p o d m o u n t r a c k in g ward or backward with the of the Automatic Bellows At-
knob, and t h e n f i x e d s e c u re ly trip o d mo u n t ra cking knob, tachment S.
w it h it s l o c k i n g k n o b , b e fo re wh ile f ixe d o n to p o f the tr ipod.
attachment on top of the 7. To determine the correct ex-
t rip o d . Th e t r i p o d m o u n t r a ck posure; f ind the exposurefactor
ca n , o f c o u r s e , b e s h i f t e d w h ile for the required extension and
attached on top of the tripod, increase the exposure by the
t o o . requiredstep.
See "Exposure Factor" on page
1 6 .
@View original page 13Page 14 · Read text
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7. I Pointerson Close-UpPhotography
o Focusing o Depth of Field
There will be a decrease in the The depth of f ield will also
actual brightness through the become more shallow as the
lens in c l o s e - u p p h o t o g r ap h y, magnification is increased in
a s c a n b e s e e n i n " E x p o su re close-upphotography.
Fa c t o r" o n p a g e 1 6 . T h us, it It is imperative,therefore, that
w ill be f o u n d r a t h e r d i f ficu lt focusing be done as carefully
t o f oc us w i t h t h e s p l i t - i m a g e o r as possible. At the same time,
mic roprism s p o t o f t h e f o c u sin g stop the lens down as much as
screen. Theref ore, use the su r- permissiblein order to increase
roundin g m a t t e s c r e e n a r ea fo r the depth of f ield.
f o c u s ing, i n s u c h c a s e s . A slow shutter speedwill be the
Or, use the optional Matte rule, in most cases. Therefore,
Fo c u s ing S c r e e n S o r G r i d Fo - use a strong, rugged tripod for
c u s ing S c r e e n S , w h i c h h a ve holding the equipment, in order o Flash Synchro Socketc e n t ral m a t t e a r e a s , f o r th is to minimize camera vibration
pu rpose. and, at the same time, use a Use the f lash synchro socket on
cable releasewheneverpossible. top of the lens mount plate for
ln case of SO-A or SO-Am f lash photographs with the
camera, use of Mirror Lock-up Automatic Bellows Attachment
device will help to prevent S .
cameravibration. Do not use the hot shoe of the
Speed Grip S or SO-Am because
there will be no flash illumina-
tion, when using the Automatic
BellowsAttachment S.
oView original page 14Page 17 · Read text
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o Extension
Magnification in close-up shooting increasesin relation to the distancethe ;
lens is extended away f rom the f ilm plane.With greater extension, shooting will gradually move into the world of It
macrophotograPhy. t
The distance from the rear or camera bayonet mount of the accessoryto
the front or lens bayonet mount is the extension provided by the Auto-
matic Bellows Attachment S. lt is a minimum 53 mm, when the bellows "!
are contracted, and a maximum 153 mm, when the bellows are fully ex-
tended, which meansthat the bellowsprovide a 100 mm extension.
When both lens mount plate and camera mount plate are racked back as
far as possible towards the camera body (minimu,m extension of the
accesso;y),the index of camera mount plate points 0, while the index of
lens mount plate points 53 on the extensionscaleindicatingthe minimum
bellows extension of 53 mm.
o Magnification
Magnification is the relationship between the size
of the subject and the size of the image on thefilm.
It can also be considered the relationship between
the size (one side) of the subject area being photo-
graphed and the size (one side) of the square nega-
tive frame area.
lmage Size One Side of Square Negative Frame
Maqnificatioo = - " Obiect Size
As the size of negativeframe area is f ixed as 55'6 x
55.6 mm;
55.6 mm
Magnification = One Side of Subject AreaView original page 17Page 27 · Read text
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. J
How to Use the 11.1Careand Maintenance
* The shutter coupling shaft transmits functions taking The extensions for the attachment is indicated
place in the camera body to the lens and, therefore, is a along the horizontal axis at the bottom edge, the
very important part of the Automatic Bellows Attach- magnifications along the vertical axis at the left
ment S. Since misalignmentsin the shutter coupling border while the heavy lines slanting upwards to
shaft will lead to serioustroubles, do not apply pressure the right inside the graph indicate the lensesthat
or shock during use, as well as during attachment and can be used. ;l
detachment,and, of course, when carrying it about. The figures on the slanting heavy lines for the * Keep the contact points on the camera mount plate and lensesindicate the exposure factors at these points. iI
lens mount plate clean at all times, as otherwise,dirty The extensions indicated in the horizontal axis
contact points will lead to poor contact and misoper- will coincide with the total extension of the
ations of the lens shutter, flash synchronization and/or Automatic Bellows Attachment S only when the
automatic exposure operations. lens is used at inf inity. In addition to the extension
* Keep the lens bayonet mount and camera bayonet of the attachment, the lens itself can be extended
mount covered with their caps during storage and/or with its helical f ocusing system and the total
when carrying the attachment, in order to guard the extension possible, in this case, is indicated by the
contact pins f rom damageand/or dirt. heavy broken lines which continue at the end of * Clean the attachment with a clean soft hair brush, the heavy lines for the lenses.
rubber-ballair-blowerand/or silicon cloth only. Do not Example: The B0 mm lens is used with an exten-
use alcohol, thinner or other solventson the lacquered sion of 14 cm. Move along the bottom line hori-
surfacesand/or bellows. zontally to 14, then directly upward to the heavy
* When SO or SO-A with Speed Grip S attached and the line for the 80 mm lens, which indicatesan ex-
SO-Am camera is attached, camera mount plate can not posure factor of 6.4. Finally, move from that point
be moved forward. horizontally to the left where a magnification of
* When the Polaroid Film Back S is attached to SO or approximately 1.7x will be indicated.
SO-A camera body, there will be certain restriction on
movement of camera mount plate.
* Pleaseuse the Automatic Bellows Attachment S singly,
but never in combination with the Automatic Extension
Tubes S.
@View original page 27From the M. Butkus archive. Original publisher and archive notices are retained.
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PDF verified 2026-10-10.