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Congratulations on your choice of the Bronica SQ-A single lens reflex camera that has been

developed to give you quality performance, simple handling convenience and extremely

useful versatility, such as required for professional photography.

The Zenza Bronica SQ-A has been designed to take full advantage of the square 6cm x 6cm

medium format. It has also been developed as a complete modular "system" camera, with a

very high degree of interchangeability in lenses, finders, focusing screens, film backs, etc.

To obtain best results from your camera, we suggest that you read this instruction manual

carefully, before you even touch the camera. Thoroughly familiarize yourself with its work-

ing parts, before loading your first roll of film, and your pleasure in using the Zenza Bronica

SQ-A will be even greater.

NOTICE

Although instructions following are based on a standard combination consisting of the

main camera body with standard lens, film back SQ 120 and waist level finder, the choice of

lens, film back and finder is left to the discretion of the photographer, who should choose

those items best suited to the type of assignments contemplated.

SQ-A

Specifications of the ZENZA BRONICA SQ-A

Parts of the ZENZA BRONICA SQ-A

1. Loading the Battery

2. Battery Checking

3. Attachment and Removal of Film Backs

4. Construction of Film Back

5. Film Loading

6. ASA/ISO Film Speed Dial

7. Film Type Indicator Frame

8. Film Advance and Shutter Cocking

9. Exposure Counter

10. Film Unloading

11. Setting the Shutter Speed Dial

12. Shutter Release Button

13. Time (T) Exposure

14. Exchanging Lenses

15. Interchanging Finders

16. Waist-Level Finder and Interchanging Magnifiers

17. Setting the Aperture

18. Focusing Adjustments

19. Distance Scale and Depth of Field Scale

20. Infrared Photography

21. Flash Photography

22. Multiple Exposures

23. Mirror Lock-up

24. Interchanging Focusing Screens

25. Attachment of the Neck Strap

26. Facts about the Battery

27. Pointers on Shooting

28. Care of the SQ-A

29. Depth of Field Table

30. Specifications of Zenzanon-S Lenses

3, 4

6, 7

8, 9, 10

13, 14

15, 16

17, 18

19, 20, 21

26, 27

Contents Page

Type 6cm x 6cm format lens shutter single reflex

camera, with interchangeable lens, film back,

finder and focusing screen systems.

Frame Size 55.6mm x 55.6mm

Film 120/220/135 roll films and Polaroid pack film,

with exclusive film backs.

Standard Lens Zenzanon-S 80mm F2.8 lens; interchangeable

type; 6 elements in 4 groups; multi-layer anti-

reflection coated; 51° angle of view; F22 mini-

mum aperture; helical focusing from infinity

to 80cm.

Filter Size 67mm diameter on 50mm to 250mm lenses;

95mm diameter on 40mm lens and 500mm

lens.

Lens Mount Exclusive four-claw Bronica SQ bayonet

mount.

Focusing Helical focusing system built into each lens;

angle of rotation 171° for standard lens.

Lens Diaphragm Fully automatic instant reopening lens

diaphragm action; equal-distant aperture

scale graduations; depth of field previewing.

Shutter Electronic control SEIKO #0 between-lens leaf

shutter; shutter speeds 8 sec. to 1/500 sec-

Multiple Exposure Multiple exposure possible with lever on

main camera body.

Mirror Lock-Up Mirror lock-up possible with switch lever on

the side of main camera body for single or

continuous picture taking.

Specifications of the ZENZA BRONICA SQ-A

Film Back Daylight loading interchangeable type; exclu-

sive backs for 120 (12 exposures), 220 (24

exposures), 135 (format sizes of 24 x 36mm

and 24 x 54mm) roll films and Polaroid pack

films; with ASA/ISO film speed dial on Film

Back SQ 120/220/135 and ASA/ISO film speed

switch on Polaroid Film Back S coupling to

the finders with built-in exposure meter,

when attached.

Finder Interchangeable finder system.

Focusing Screen Interchangeable type; Standard type, sup-

plied with camera, has split-image rangefind-

er spot surrounded by microprism ring and

full-area matte screen. Also 6 optional focus-

ing screens are available.

Flash Synchronization X-setting (up to 1/500 sec.)

Battery Checking Red-colored LED lights up at front end of

finder, outside screen area, when battery

check button is depressed; also doubles as

shutter closing signal.

Battery Single 6-volt silver oxide battery (No. 544, PX-

28 or 4G13) or alkaline manganese battery

(No. A544 or 4LR44.)

Dimensions 92mm wide x 109mm high x 179mm long

(with standard lens, Film Back SQ 120 and

waist-level finder S)

Weight 1,500 grams- (with standard lens, Film Back

SQ 120 and waist-level finder S)

915 grams- SQ-A main camera body w/ Film

Back SQ 120

115 grams- Waist level finder S

470 grams- Zenzanon-S 80mm lens

The specifications are subject to change without prior notice.

Specifications of the ZENZA BRONICA SQ-A (con’t)

Parts of the ZENZA BRONICA SQ-A

Aperture Ring

Depth of field scale

Distance scales

Lens alignment dot

Waist-level finder

Back cover release

button (right)

Exposure counter

ASA/ISO film speed dial

Back cover release button

(left)

Magnifier

Shutter speed scale

Shutter speed dial

Focusing hood catch

Focusing ring

Flash synch socket

Shutter release button

Neck strap eyelet

Multiple exposure lever

Film winding crank

Finder release button

Manual film winder Shutter release button

locking ring

Mirror lock-up switch lever

Cable release

socket

Depth of field

preview lever

Lens release

button

Battery check button

Film plane mark

Spool holder

Dark slide slit

Neck strap eyelet

Film back release

button

Film type indicator frame

Battery chamber button

Battery chamber cover

Tripod socket (1/4” screw)

Accessory mounting guide

Flash synch contact

Time

exposure lever

Set screw

A. Depress the battery chamber button with your finger and, at the

same time, move the battery chamber cover in the arrow-indicated

direction. The cover will come off easily.

B. Coincide the plus (+) and minus (-) marks on the battery with simi-

lar polarity indications in the battery chamber. Then, push in the bat-

tery. Insert the battery chamber cover in, the BATTERY end first, and

then move the cover in the other direction (opposite to the arrow

indication) until it locks.

* The shutter will be mechanically-controlled (at 1/500 sec.) when the

battery is loaded with polarity marks reversed.

A red-colored battery check LED lights up outside the focusing screen

area, (central front of finder), when the battery check button is

pressed. This means the battery is loaded properly and there is suffi-

cient power for operations.

* If the LED does not light up; (1) the battery is not loaded properly or,

(2) the battery is completely drained and should be exchanged.

1. Loading the Battery

The electronically controlled shutter will not work without loading the battery. The shutter

will be mechanically controlled when the battery is not loaded and will be released at 1/500

sec., regardless of the setting on the shutter speed dial.

Use one 6 volt silver oxide battery or alkaline-manganese battery.

* The battery may be obtained at any photographic equipment or electrical appliance shop.

2. Battery Checking

3.Attachment and Removal of Film Backs

The film back is a film chamber that can be attached or detached freely. This permits a free

exchange of film types even during shooting sessions.

The main camera body and film back are fully coupled, upon connection. Therefore, always

turn the film winding crank completely one time, upon attaching the film back.

A. To remove the film back from the main camera body, insert the

dark slide into the dark slide slit, as illustrated, with the mark on the

dark slide at the top end. Push it all the way in.

B. Depress the film back release button and the lower end of the film

back can be removed, as illustrated. Simply shift the film back up

slightly and pull it away.

* The dark slide cannot be withdrawn from the film back when the

film back is not attached to the main camera body.

* The dark slide must be withdrawn from its slit, upon attachment of

the film back to main body, or otherwise the shutter cannot be

released. Furthermore, there is a danger of the film accidentally

becoming detached from the main body, should the dark slide be left

in its slit while the camera is being carried. Therefore, make it a rule

to withdraw the dark slide promptly upon attaching the film back to

the main body.

C. To attach the film back to the main camera body, simply insert the

latches at the upper end of the film back into the attachment open-

ings at the upper end of the main camera body. Then, press the lower

end of the film back against the main body until it locks securely.

3.Attachment and Removal of Film Backs

If winding is not possible, all preparations for taking pictures have been completed. But, if

winding is possible, rotating the film winding crank until it stops will automatically take care

of the incomplete action, even if the shutter is uncocked or film is not advanced. Thus, it's

always possible to choose the film type most suited for the shot, even midway in the roll.

A film speed dial is available on the film backs and can be used for setting the film speed of

the film loaded in the film back. This will, furthermore, automatically couple when the finder

with built-in exposure meter is attached to the main camera body. This should be very con-

venient when using films of different sensitivities in various film backs.

Film backs are available optionally. Please select a film back best suited for shooting condi-

tions.

* See instructions supplied with Film Back SQ 135 for proper use of the 135 roll film.

A. The film back consists of a film holder and a film back frame, with

exclusive film backs available for 120 and 220 roll films. The film hold-

er has an insert or frame for loading film, as well as a built-in winding

mechanism.

B. The film back frame has a base with a dark slide slit and a back

cover with an ASA/ISO film dial and a film type indicator frame. The

film back frame completely encloses the film holder and shields it

from outside light, as well as connecting it to the main camera body

and also coupling with the finders with built-in exposure meters.

A. To open the back cover, squeeze the left and right back cover

release buttons, in the arrow-indicated directions, at the same time

and the back cover will open.

B. The film holder can be taken out for film loading, upon opening

the back cover.

4. Construction of Film Back

5. Film Loading

C. There are two spool holders on the film holder. The top one is for

the fresh film spool and the bottom is for the empty take-up spool.

The left side shaft of spool holder can be opened by pushing the

fresh film spool outward in the arrow-indicated "A" direction.

Therefore, insert the right end of the spool on to the right side shaft,

which is fixed, and then close the left side holder (shaft) that will

engage the spool.

* The spool holders on the left side will be locked securely when the

back cover is closed.

D. After loading the fresh film spool properly, draw out the leading

end of the film and turn it across the film pressure plate (as illustrat-

ed). Run it down and turn it over to the take-up spool. Insert the

leading end into the slit of the take-up spool and wind slightly until

securely engaged.

* The inside black surface of the leader must face out when running

across the pressure plate, in this case.

E. Lift up the hinged flap and rotate the manual film winder on the

right side of the film holder in the arrow-indicated direction. When

starting point, or arrow-mark, on the leader is aligned with the trian-

gular start-mark on the top left side of the film holder, stop rotation.

F. The starting point, or arrow mark, can also be aligned with the

start-mark, with the film holder loaded in the film back. Simply rotate

the film-winding crank on the main camera body, in this case. This

method is preferred since there will be coupling with the main cam-

era body mechanism, from the beginning.

* If the film is not advanced when the film-winding crank is rotated,

the film holder is not inserted properly and/or the main camera body

may be set for multiple exposures. In the latter case, return the multi-

ple exposure lever to an upright or vertical position. (See "22. Multiple

Exposures").

5. Film Loading (con’t)

G. Close the back cover by pressing it firmly against the base of the

film back, as illustrated. The back cover will automatically close and

lock. The same operation will close the back cover when the film

back is detached from the main body.

Upon loading the film, tear off the end flap from the empty film pack-

age and insert it in the film type indicator frame.This will help you

keep track of the film loaded in the film back, even when two or more

film backs are used with different films. At the same time, set the film

speed with the ASA/ISO film speed dial. This will come in handy

when using the finder with built-in exposure meter.

Rotating the film-winding crank completely one time, in the forward

direction, will advance the film one frame and, at the same time, cock

the shutter, with the winding action stopping automatically. On the

other hand, short, rapid strokes, up to an accumulated full rotation,

will also do the job.

* Please make sure that the mirror lock-up switch lever is set at "N"

opposite the index when taking pictures. It does not require mirror

lock-up.

The exposure counter shows the number of

frames exposed or, in other words, is an addi-

tive type. Starting from "S", the counter on the

Film Back SQ 120 shows numbers from 1 to

12, while Film Back 220 shows numbers from 1

to 24. The letter "S" and numbers "12" and

"24" are orange-colored, while all other num-

bers are white.

7. Film Type Indicator Frame

8. Film Advance and Shutter Cocking

9. Exposure Counter

A. After the 12th exposure of the 120 roll film (24th exposure of the

220 roll film), the film-winding crank will turn freely with further rota-

tions. Therefore, continue rotating the film-winding crank until the

remaining film and all leader paper is wound up on the take-up

spool. Open the back cover when winding action becomes very light.

B. Remove the film holder and, while preventing the loose film from

unwinding, take out the take-up spool. Seal the exposed film and

return it to its original box until development.

* Load and unload film away from direct sunlight and/or strong illu-

mination.

A. The shutter speed scale is viewed in its window over the shutter

speed dial. The numbers on the scale are shutter speed settings, with

numbers 1 to 8S full numbers and numbers 2 to 500 fractions of a

second. For example, "8S" is 8 sec., "2S" is 2 sec., and "500" is 1/500

sec., but no intermediate setting between click stops are possible.

* The shutter is released at 1/500 sec., regardless of the setting when

the battery is not loaded or is completely drained.

B. The numbers on the scale are color-coded in orange and white.

Orange-colored numbers are full number settings of 1 second and

longer while white-colored numbers are settings from ½ to 1/500

second. There is no B (bulb) setting. See time (T) exposures. Shutter

speed settings can be changed before or after shutter cocking.

10. Film Unloading

11. Setting the Shutter Speed Dial

A. Depress the shutter release button with the ball of the finger. Use

a smooth, gentle action and press all the way in, without using

strength or jerking.

* A red-colored LED will light up in the front central area of the finder

and will indicate that the shutter has closed, in this case.The signal is

specially valuable when using slow shutter speeds, as it indicates

completion of the exposure.

B. Safety Lock- The shutter release button can be locked to prevent

accidental operations. Simply rotate the locking ring 60° clockwise,

which will place a red dot on the side. The cable release socket will

also be locked, in this case. To release the safety lock, rotate the lock-

ing ring counter-clockwise and place the red dot diagonally lower.

The shutter cannot be released in the following cases:-

1. Shutter release button is locked.

2. Dark slide is inserted.

3. Film winding crank has not been rotated fully. (Same when

exposure counter is still between "S" and "1".)

4. Shutter is not cocked.

5. Lens is not properly attached. (Same with extension tubes

and bellows.)

6. Lens release button is being depressed.

7. All frames (12 on 120 roll film and 24 on 220 roll film) have

been exposed already.

* If film-winding crank is rotated while depressing shutter release

button, the shutter will be released when the winding action is com-

pleted.

* A cable release or self-timer can be used with the cable release

socket on the main body.

Time exposures are made with the time exposure lever on the lens, regardless of the setting

on the shutter speed scale. However, the lever is locked to prevent accidental movement

and must be unlocked for use.

12. Shutter Release Button

13. Time (T) Exposures

A. The finder can be interchanged, with other optional finders, to

match shooting conditions to photographic conditions. To attach the

finder, align the front end of the finder with the front end of the find-

er frame on top of the main camera body, as shown. Then, gently

lower the finder and, when well seated, slide forward until it locks.

B. To detach, simply depress the finder release button, while, at the

same time, sliding the finder backwards where it can be taken up.

A. The focusing hood of the waist-level finder is opened by pushing

up on the focusing hood catch at the rear end of the folded waist-

level finder.

* There is no standard finder for the Bronica SQ-A, with the user hav-

ing a choice of several finders. Instructions are based on the waist-

level finder because of its popularity.

B. The magnifier is flipped into viewing position by simply sliding the

release lever in the arrow-indicated direction. To store the magnifier,

simply push it down until it catches.

* The magnifier can be exchanged for one matching the eyesight of

the user.

C. To close the focusing hood, first, push down the magnifier (if it is in

viewing position). Next, press in both side frames, as illustrated, and at

the same time, press the front frame back towards the rear. The

focusing hood will automatically be folded down.

15. Interchanging Finders

16. Waist-Level Finder and Interchanging Magnifiers

D. The standard magnifier supplied with the waist-level finder has a

power of -1.5 diopters, which can be exchanged for others with pow-

ers of -4.5, -3.5, -2.5, -0.5, +0.5, and +1.5 diopters. These optional

accessories should be purchased to suit the user's eyesight, if neces-

sary. Simply rotate the magnifier frame in the counter-clockwise

direction to unscrew. Attach in the reverse manner.

A. The aperture ring is rotated, in either direction, to set the required

f/number opposite the white index dot. The aperture ring click-stops

at the numbered settings. Intermediate settings are also possible.

* Intermediate settings cannot be used when the finders with built-in

exposure meters are used.

B. All interchangeable lenses for the Zenza Bronica SQ-A have fully

automatic lens diaphragms, which means that the focusing screen is

always viewed at the full aperture, with the brightest possible image.

However, depressing the depth of field preview lever will stop the

lens diaphragm down to the pre-selected lens opening and permit

the photographer to check the depth of field effect on the focusing

screen.

* The aperture ring must not be adjusted while the depth of field pre-

view lever is being depressed.

* If exposure measurements are taken with the depth of field preview

lever depressed, when using finders with built-in exposure meters,

the shutter speed setting indicated will cause over-exposure. This is

because proper exposures are obtained with exposure measure-

ments made at full aperture.

16. Waist-Level Finder and Interchanging Magnifiers (con’t)

17. Setting the Aperture

A. The lens is focused on the subject by rotating the focusing ring in

either direction, while checking the effect on the microprism / split-

image rangefinder spot in the center of the focusing screen (standard

type).

B. The central split-image spot splits the image into two, with the

upper and lower halves separated horizontally when the lens is out of

focus. When in focus, however, the two halves will coincide with the

displacement disappearing. The microprism ring surrounding the

central spot can also be used for checking the sharpness of the

focused image, since the image will glitter when the lens is not

focused. The surrounding full-area matte surface can also be used for

checking image sharpness.

A. Distance scales on the Zenzanon-S lenses can be used for focusing

at the required distance actually focused. Simply rotate the focusing

ring and set the required distance opposite the orange-colored index,

which will adjust the lens for the required distance.

B. There is an apparent zone of sharpness, both in front and back of

the focused subject, which is known as the depth of field. The depth

of field scale shows the zone of apparent sharpness at any lens open-

ing or distance and can be utilized for quickly and simply ascertain-

ing the depth of field. The depth of field scale is next to the distance

scales and is made up of identical pairs of apertures on both sides of

the orange-colored distance index.

18. Focusing Adjustments

19. Distance Scale and Depth of Field Scale

A. To make up multiple exposures, rotate the film winding crank (to

advance the film and cock the shutter) and then turn the multiple

exposure lever in the clockwise or arrow-indicated direction, which

will expose a red mark. When set in this manner, the shutter can be

released and cocked any number of times, without advancing the

film.

B. Upon taking the multiple-exposed picture, be sure to return the

multiple exposure lever back to its vertical position and cover the red

mark. Otherwise, there will be additional multiple exposures on the

same frame.

A. The mirror lock-up switch lever has three settings, or N, S and C,

with the lever rotated to set N (normal) to the index for shooting

without locking up the mirror, S (single frame) and C (continuous) for

shooting with the mirror locked up.

* On shooting with mirror locked up, always use Manual mode when

the AE Prism Finder S is attached.

B. For shooting with the mirror locked-up, first cock the shutter.

Then, rotate the mirror lock-up lever in the arrow-indicated direction

and coincide S or C to the index. The lens shutter will close com-

pletely and the reflex mirror and film safety plate will swing up.

C. The shutter will be released when the shutter release button or

cable release is depressed.

22. Multiple Exposures

23. Mirror Lock-Up

D. When S is set to the index with the mirror lock-up switch lever, the

lever will automatically return to N, with the next film advancing and

shutter cocking action. And, following shots will be normal.

a. Advance the film and cock the shutter. In this case, a single expo-

sure will be wasted.

F. To return to normal shooting with the mirror locked up in the con-

tinuous mode, rotate the mirror lock-up switch lever and set S or N to

the index, then cock the shutter. When shooting is suspended, after

mirror lock-up in the S or C mode, by rotating the mirror lock-up

switch lever to N, one of the following actions will take place-

1. Shutter will be released, or

2. Shutter will not be released; furthermore, it will not be possible to

press the shutter release button.

* In order to prevent the above, shooting should be continued, in the

following manner;

E. When C is set to the index with the mirror lock-up switch lever, the

lever will not return to N with the next film advancing and shutter

cocking action. Therefore, shooting with the mirror locked-up will be

possible any number of times.

* When the film winding crank is revolved, after all 12 or 24 expo-

sures, film winding only in the normal manner, will not take place, but

the shutter will be released with the mirror locked up, any number of

times. Therefore, always return the mirror lock-up switch lever to N

after the last 12th or 24th exposure, and wind the film in the normal

manner.

23. Mirror Lock-Up (con’t)

b. Cover the lens and take one blank exposure, as follows: First, return

the mirror lock-up switch lever to N setting. Then, use the multiple

exposure lever and expose the frame. Finally, after exposing the

frame, reverse the multiple exposure lever. (See 22. Multiple

Exposures.)

c. Utilize film back interchangeability and expose the frame after

removing the film back from the main body. Then, continue shooting,

according to "b" preceding. (See 3. Attachment and Removal of Film

Back.)

B. To install the focusing screen, nest the protrusion at the rear end of

the screen in the corresponding groove on the main camera body.

Then, slide both screen removal levers forward to secure the focusing

screen.

* Seven types of focusing screens are available for the Zenza Bronica

SQ-A.

A. The focusing screen can be exchanged, depending on the type of

photographic work being undertaken. First, remove the finder

attached to the main camera body. Then, move the screen removal

levers on both sides in the arrow-indicated directions, as illustrated.

Then, using a pincer or similar tool, lift up the screen with the protru-

sion at the rear end.

23. Mirror Lock-Up (con’t)

24. Interchanging Focusing Screens

Microprism / split-image Microprism Matte Split-image Grid-lines Matte (for 135 film) Microprism / split-image

(for 135 film)

A. First, insert the U-shaped ring into the neck strap eyelet, as illus-

trated.

B. Next, place the plastic ring cover over the u-shaped ring, as illus-

trated.

C. Next, thread the neck strap through the plastic ring cover (and the

U-shaped ring) and pull it out, as illustrated.

D. After adjusting the length of the neck strap, pass the leading end

of the strap through the buckle, as illustrated, which will fix it securely.

* There should be no slack between the buckle and the plastic ring

cover, or in "A" section, which means that both straps must be of the

same length at this point.

25. Attachment of the Neck Strap

The battery supplies power for the various electronic control mechanisms incorporated in

the Zenza Bronica SQ-A. When used incorrectly, there is a possibility of the wrong exposure

being set to the camera and/or the camera not operating. Be sure to use and store the bat-

tery correctly for obtaining optimum performance from it at all times.

Take the battery out of the battery chamber when storing the camera.

Leaving the battery in the camera for a long time, without using it, can lead to leakage prob-

lems and result in poor contact.

Discard a battery with leakage or corrosion and thoroughly clean out the battery chamber

before inserting a new battery.

Clean the contacts of the battery chamber and battery with a soft cloth. Don't use sandpa-

per or emery paper.

Don't throw the battery into a fire or hit it strongly, as there is danger of explosion.

Either a silver oxide battery (No. 544/PX28/4G13) or an alkaline manganese battery

(A544/4LR44) is used with the Zenza Bronica SQ-A. Both have very good cold weather resist-

ance. However, there is a tendency for performance to drop when the temperature falls

below 0° C (32° F).Therefore, make it a rule to use a new battery and/or keep replacement

batteries on hand for shooting outdoors in freezing weather. Keep the battery (and camera)

under cover, next to the body, and load just before beginning the session and/or, preferably,

use the optional Remote Camera Battery Pack E.

The shutter cannot be cocked when the film is not loaded in the film back. The use of the

multiple exposure lever will, however, permit you to cock the shutter, in such instances. This

feature is, of course, very convenient for familiarizing yourself with the camera and for test-

ing the shutter in flash photography. (See 22. Multiple Exposures.)

Battery power is not consumed when time exposures are made.

The voltage will drop when the camera is used for long shooting sessions in freezing weath-

er. Insert a new battery or keep a spare on hand, for such occasions. Furthermore, keep

such batteries in an inside pocket.

The focusing screen is detached for exchanging with other types. Do not place trimming

masks or tapes on the bottom surface of the screen, as this will lead to inaccurate focusing.

A red LED will flash above the focusing screen area and signal closing of the shutter when

taking the picture. Wait for this signal, especially at slow shutter speeds, before rotating the

film winding crank.

It should be remembered, when taking pictures, that the final print will not be a square for-

mat, especially in the economy size, but will be cut down on both sides or at the top and

bottom.

26. Facts about the Battery

27. Pointers on Shooting

Restrict cleaning of the reflex mirror to blowing or brushing with the blower brush or a soft

camel hair brush. Don't touch the surface with your fingers or a cloth.

Use lens cleaning tissue and liquid to clean the surface of the lens. Do not use silicon-coat-

ed cloth for this purpose, as it will prove detrimental to the lens coating.

Clean the plastic focusing screen in the same manner. Don't touch the surface as you may

leave fingerprints.

Protect your camera from temperature changes which can result in moisture condensation,

frost, etc., inside the body, leading to rusting of metallic parts.

Protect your camera from impact and vibrations, too.

Upon attaching the film back, always pull out the dark slide from its slit.

Always protect the lens with its cover, when carrying the camera.

Clean the camera and the lens very carefully after using it outdoors or in wet weather or at

the seashore.

Wipe the camera carefully with a well-wrung damp cloth, using fresh water, if exterior is

affected by salty air. Then, wipe it dry with a soft, dry cloth. If necessary, send it out for a

quick inspection at an authorized repair station.

If the equipment is not being used for a long period, store everything in tin-lined containers,

with plenty of desiccant, such as silica gel. Store the equipment in a cool, dry, and well ven-

tilated (but not windy) place.

Do not thread too strongly when using a longer-than-standard tripod screw, as you may

damage the body.

* Both main camera body and lens must be in the "cocked" condition to attach or remove

the lens. In other words, when "cocked" the cocking pin of the lens will be set between the

red band and green dot, while the cocking pin of the main body mount will be set to the

green-colored dot. When not set in the above manner, the cocking pin of the detached lens

can be set by moving it manually, while the cocking pin of the main body mount will be set

by revolving the film winding crank.

28. Care of the SQ-A

F-num-

bers

Meters

oo 10 5 3 2 1.5 1.2 1.0 0.9 0.8

2.8 oo 13.3 5.68 3.22 2.09 1.55 1.23 1.02 0.92 0.81

39.8 8.03 4.46 2.81 1.92 1.45 1.17 0.98 0.89 0.79

4 oo 15.1 5.99 3.32 2.13 1.57 1.24 1.03 0.92 0.82

28.9 7.47 4.29 2.74 1.89 1.44 1.16 0.97 0.88 0.78

5.6 oo 19.3 6.53 3.47 2.19 1.60 1.26 1.04 0.93 0.82

20.5 6.77 4.06 2.64 1.84 1.41 1.15 0.96 0.87 0.78

8 oo 31.3 7.48 3.72 2.28 1.64 1.29 1.06 0.94 0.83

14.5 5.97 3.76 2.52 1.78 1.38 1.13 0.95 0.86 0.77

11 287 9.44 4.13 2.42 1.71 1.33 1.08 0.96 0.85oo

10.3 5.13 3.42 2.36 1.71 1.34 1.10 0.93 0.85 0.76

16 15.0 4.90 2.66 1.82 1.39 1.12 0.99 0.87oo oo

7.28 4.27 3.02 2.18 1.61 1.28 1.06 0.91 0.83 0.74

22 97.0 6.67 3.08 2.00 1.48 1.18 1.04 0.90oo oo

5.17 3.46 2.60 1.96 1.49 1.21 1.01 0.87 0.80 0.72

F-num-

bers

Feet

oo 30 15 10 7 5 4 33.5

2.8 oo 38.7 16.8 10.8 7.35 5.17 4.10 3.57 3.05

131 24.5 13.5 9.34 6.68 4.84 3.90 3.43 2.95

4 oo 43.5 17.7 11.1 7.49 5.23 4.14 3.60 3.07

94.8 22.9 13.0 9.11 6.57 4.79 3.87 3.40 2.93

5.6 oo 53.4 19.1 11.6 7.72 5.34 4.20 3.65 3.10

67.1 20.9 12.4 8.79 6.41 4.71 3.82 3.36 2.90

8 oo 79.2 21.5 12.4 8.06 5.49 4.29 3.71 3.15

47.5 18.6 11.5 8.38 6.19 4.59 3.75 3.31 2.87

11 25.1 26.3 13.8 8.61 5.73 4.43 3.81 3.21oo

33.7 16.1 10.6 7.85 5.91 4.44 3.65 3.24 2.82

oo oo 38.3 16.5 9.53 6.10 4.64 3.96 3.31

23.9 13.5 9.41 7.22 5.55 4.25 3.53 3.14 2.75

oo oo 110 22.7 11.2 6.72 4.97 4.19 3.46

17.0 11.0 8.16 6.48 5.12 4.01 3.36 3.02 2.65

29. Depth of Field Table

200 mm F4.5 250 mm F5.6 500 mm F8 Tele-converter S

No. of group-ele-

ment 5 - 5 5 - 5 6 - 7 5 - 6

Angle of View

22° 30’ 18 9

Apertures

4.5 - 32 5.6 - 32 8 - 45

Minimum focusing

distance (M)

2.5 8.53

(8.2 ft) (9.8 ft) (28 ft)

Filter Size (mm)

67 67 95

Overall length

(mm) 97 129 255 53

Weight (grams)

740 870 1890 500

Equivalent focal

length in 35mm

format camera

(mm)

105 135 280

30. Specifications of the Zenzanon-S Lenses (con’t)

Produktspecifikationer

Varumärke:	Zenza Bronica
Kategori:	Inte kategoriserad
Modell:	SQ-A

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