Film cameras
Olympus 250 Film Back User manual
User manual for Olympus 250 Film Back. 16 pages in English. Read the original PDF, download or print a copy without registration.
16 pagesEnglish0.7 MB PDF
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Document details
- Brand
- Olympus
- Model / document
- Olympus 250 Film Back
- Document type
- User manual
- Language
- English
- Pages
- 16
- File size
- 0.7 MB
- Category
- Film cameras
- Document date
- Not specified in catalog
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Page 3 · Read text
1@ zso FILM BAcK
Camera Set Pressure Plate Magazine Chamber
(Left) G roove
Camera Set Groove
Motor Drive Camera Stage
Coupling Gear
Camera Clamp Plate Motor Drive Coupling Terminal
SPECI FI CAT IONS film o Film Loading: Uses two 25O manual reset: automatic stop at "0"
oCamera: Olympus OM-1 MD (pre- Film Magazines to act as supply spool o Film Type Indicator: Manual setting
f ixedpared for Motor Drive) o Camera and take-up spool o Film Winding: type o Rear cover:Hook-on type,
Mounting: Clamps on camera body in Automatic single or sequential winding by the Open/Close Knob through the
xp la ce o f standard back o Film with Motor Drive and manual winding Lock Key oDimensions: 63 x 272
capacity: Up to 1 0m (33 tt.) of with camera's Advance Lever o Ex- 85mm(2 112" x 10 314" x 3 3/8")
o Weight: 6009r. l2'1.2 ozlstandard 35mm (24 x 36mm format) posurewww.butkus.usCounter: Subtractive type withView original page 3Page 5 · Read text
1 FILM BAcK 1 @ nrrAcHrNG THE 2so FILM BAcKS zso
The 250 Film Back 1 is used with the
Motor Drive 1 to provide up to 250
exposures on 10m (33 ft.) lengths of
bulk load film. Two 250 Film Maga-
zines are required with the Film Back 1 \.
and an optional 250 Film Loader is
available to make film loadi ng from \33m (100 ft.l bulk film rolls fast and
easy.
1) Remove the standard back of the 2) Turn the Open/Close knob on top
OM-1 by opening the cover fullY and of each Magazine Chamber on the Film
pressing down on the Rear Cover Re- Back toward the "REAR COVER
lease Pin. OPEN" position until it stops.
www.butkus.usView original page 5Page 6 · Read text
3) Turn the Camera Clamp Knob at 4l Place the left side of the camera 5) While pressing the right side of the the base of the right Magazine Cham- (side with Rewind Crank) on the Cam- camera against the Film Back, turn the ber in the opposite direction of the era Stage of the Film Back and push Camera Clamp Knob in the direction arrow until it stops. This will release the camera towards the Back until the of the arrow until it stops. The Camera the Camera Clamp Plate and allow you two units are flush against each other. Clamp Plate will close locking the to attach the Film Back to the OM-1. camera firmly against the Film Back 1.View original page 6
Page 7 · Read text
6) Attach the Motor Drive 1 to the ll Make sure the units are attached
camera. Open the Coupling Gear Cover properly by operating the camera's f ilm
on the base of the Motor Drive 1. The advance lever or the motor drive. The
gears must be completely exposed to Fork Knob at the base of the right
ensure proper coupling with the Film Magazine Chamber will rotate indicat-
Back. ing that the fi lm advance mechanism is
NOTE: The Motor Drive can be at- f unctioning.
tached either before or after the Film
Back is attached.
www.butkus.usView original page 7Page 9 · Read text
s| r-onDtNG THE FILM MAGAztNEs
Two 250 Film Magazines are required 2) Cut and taper the end of the bulk 3) Continue spooling the bulk film
for the Film Back 1. One Magazine film to make a leader. Hold one of the with the emulsion side down until the
holds the bulk film while the other acts spools in one hand and with the film in desired length has been reached. Cut
as the take-up spool. your other hand, insert the film leader the film end from the bulk film roll.
1) Dismantle both Film Magazines. into the spool's slot, emulsion side 4l Place the supply spool in the Outer f ilm tiPPress the Push Button atop the Film (dull side) down. Do not fold back the Shield with the unwound
fi lm wind, asMagazine and turn the serrated edge of I eade r. facing the direction of
the lnner Shield clockwise until the NOTE: lf the leader is folded back on shown above. Leave approximate 1Ocm
openings of the lnner and Outer the supply spool, the film may not (4 in.) of film leader coming out from
Shields are aligned. Remove the Inner come off the spool smoothly. Since the the Magazine.
Shield and Spool by lifting away from leader will eventually be rolled into the
the outer Shield. take-up magazine, a fold at the end of
IMPORTANT: The following stePS the roll may result in torn film or
must be performed in the darkroom. entanglement in the shutter curtain
after release from the supply spool.
* The use of optional 250 Film Loader
www.butkus.us is recommended for easy spooling.View original page 9Page 10 · Read text
s| wrruDtNG THE FILM oNTo rHE TAKE-up spool
5) Align the opening of the Inner 1) Cut and taper the extending film NOTE: On the take-up spool, the
Shield with the opening of the Outer leader so it can be inserted into the slot leader must be folded back.
Shield and drop into place. in the take-up spool.
6) Hold the tip of the film leader 2l Fold back the tip of the leader
against the Outer Shield and turn the inside (toward the emulsion side)
Inner Shield clockwise using the flat making a 6mm 1114"l hook. Place the
button on top of the Magazine. The folded leader into the slot in the
Innser Shield will lock into place with take-up spool and wind the film over
a positive cl ick making the magazine the spool (with the emulsion side of
co mpletely I ighttight. the film inside) for several turns until it
NOTE: The following steps may be is spooling securely.
done with the lights on. (F ilm loading 3) Drop the take-up spool into the
should never be done in direct sunlight.) Outer Shield.
4) Align the opening of the Inner
Shield with the opening of the Outer
Shield and drop into place.
5) Turn the Inner Shield counter-
clockwise using the flat button on top
of the magazine until it locks into
place with a positive click.View original page 10Page 11 · Read text
@ rnsrALLrNG THE FILM MAGAztNEs
tr
1) Turn the Open/Close Knobs on the NOTE: The back cover 'does not 2l Pull down on the Fork Knobs of
top of each magazine to "OPEN" and hinge, so hold it firmly and lift it off each maEazine chamber.
release the back cover of the 250 Film the Back completely.
Back by lifting on the Rear Cover Lock
Key. Remove the cover by shifting it
slightly to the left and lifting off .
www.butkus.usView original page 11Page 12 · Read text
is evenly spaced3) Pl ace the supply magazine in the 4l Push the Fork Knobs back into 6) Make sure the film
left chamber and the take-up magazi ne their original position. between the film guides and that the
f ilm engage with thein the right. Line up the red index 5) While lightly pushing the slackened perforations of the
marks on the magazines with the white film into the magazine with your right Exposu re Counter Sprocket.
index marks on each chamber and snap fingers, take up any slack in the film
the magazines into place. by turning the Fork Knob on the left
magazi ne cou nter-clockwise.View original page 12Page 13 · Read text
1l Place the rear cover of the 250 Film 8) Turn the Open/Close Knob on the 9) Turn the Open/Close Knob on top
Back on by hooking the left end onto right chamber to "CLOSE". This locks of the left chamber to "CLOSE". This
the catch provided at the left end of the Camera Clamp Knob and Rear extends the Camera Holder and ooens
the Back. Carefully press the right end Cover Lock Key into place, and opens the Supply Magazine.
into place so the hooks of the cover the Take-up Magazine.
slide under the edge of the back and NOTE: lf the rear cover has not been
snap into place. closed completely, the Rear Cover
Lock key protrudes up and the film
might be damaged by the Lock Key
Plate. lf this occurs, lift up on the Lock
Key allthe way to release the cover and
replace.
www.butkus.usView original page 13Page 14 · Read text
10) To make sure the film advances 1 1 ) Set the exposure counter on the 12) Set the Film Type Indicator on the
properly: 250 Film Back to the desired number top of the left chamber as a reminder
Advance the film either manually or of frames. (Make sure the Open/Close of the type of film you are using.
with the motor drive for 5-6 frames. Knob has not been moved from the (Make sure the Open/Close Knob has
Make sure that the exposure counter "CLOSE" position.) The counter not been moved from the "CLOSE"
rotates correctly. moves during picture taki ng to show position.)
the number of unexposed frames re- NOTE: The Film Type Indicator is a
marnrng. "reminder" and not coupled to any
mechanism.View original page 14Page 15 · Read text
THE ptcruRE nervrovtNc THE EXposED FILM@rnxtNc @
Refer to your Manual for Motor Drive
Group.
1) When the motor drive stops and the 2l Furn the Open/Close Knobs on
Exposure Counter indicates the last both chambers to "OPEN". Pull up on
frame has been exposed ("0"), turn the the rear Cover Lock Key and remove
Exposure Counter back to 10 frames the rear cover.
(" 10"). Cover the camera lens and 3) Pull down on the Fork Knob of the
advance the film 6 frames. This will right chamber and remove the maga-
safely wind the last few exPosed zine by inverting the Film Back and
frames into the take-up magazine to shaking gently.
prevent fogging when oPening the
back.
www.butkus.usView original page 15Page 16 · Read text
RoLLffi neurovrNc ExposED FILM rN THE MTDDLE oF A
1) Shoot 6 "blank" frames to advance
your last exposures safely into the
take-up magazine.
2) Turn the Open/Close Knobs on
both chambers to "OPEN". Pull up on
the Rear Cover Lock Key and remove
the rear cover.
3) Remove the left film magazine, and 4) To remove the right magazine, pull
cut the film by pressing it against the down on the Fork Knob of the right
f ilm cutter of the take-up magazine and chamber and remove the magazine by
tearing towards you and down. This inverting the Film Back and shaking
leaves a leader extending from the left gently.
magazine to be used for spooling the NOTE: lt's a good idea to jot down
remaining unexposed film. the number of unexposed f rames in the
supply spool for future reference.View original page 16From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-10.