Motion picture camera with fading means

Claim 2

In a motion picture camera, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary worm which is driven by said motor, and means for rotating the takeup reel of a filmcontaining magazine at least while said worm is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a coupling lever, a rotary gear mounted on said coupling lever and engageable with said worm, and a pawl driven by said gear for rotating said rotary unit to thereby index said rotary unit when said worm rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, and arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes the fade-in effect that length of film which was previously exposed with fade-out effect.

Claim 3

A combination as defined in claim 1, further comprising master switch means in circuit with said motor and blocking means for preventing moVement of said actuating means from said operative position in the open position of said master switch means.

Claim 4

A combination as defined in claim 1, wherein said adjusting means comprises an electronic control circuit including switch means and said rotary unit comprises trip means for actuating said switch means in response to indexing of said rotary unit upon connection thereof to said prime mover and after said release means starts said motor whereby said circuit effects said gradual reduction in the size of said aperture.

Claim 5

A combination as defined in claim 3, wherein said rotary unit is indexible about a predetermined axis and said trip means comprises a projection on said rotary unit.

Claim 6

A combination as defined in claim 1, wherein said reversing means comprises a carrier movable between first and second positions to thereby respectively set said motor for operation in forward and reverse directions, said rotary unit having means for maintaining said carrier in said second position while said rotary unit is being indexed through said second distance.

Claim 7

A combination as defined in claim 5, wherein said carrier is provided with switch contacts and said means for maintaining the carrier in said second position is a cam which retains the carrier in such second position while the rotary unit is indexed through said second distance.

Claim 8

A combination as defined in claim 5, wherein said reversing means further comprises means for permanently biasing said carrier to said first position.

Claim 9

A combination as defined in claim 1, wherein said arresting means comprises normally closed switch means in the circuit of said motor and said rotary unit comprises means for opening said switch means upon completion of indexing movement through said second distance.

Claim 10

A combination as defined in claim 1, wherein said diaphragm means comprises at least one vane movable between a plurality of positions to thereby change the size of said aperture, said adjusting means comprising an adjusting member receiving motion from said rotary unit and operative to move said vane in a direction to reduce the aperture size in response to indexing of said rotary unit through said first distance.

Claim 11

A combination as defined in claim 9, wherein said programming device is indexible about a predetermined axis and includes a plurality of coaxial elements one of which transmits motion to said adjusting member.

Claim 12

A combination as defined in claim 1, wherein said fading means further comprises input means for operating said coupling means in response to movement of said actuating means to said operative position whereby said coupling means connects said prime mover with said rotary unit.

Claim 13

A combination as defined in claim 11, wherein said actuating means comprises a knob which is rotatable to and from said operative position, said input means comprising a movable member which is operatively connected with said coupling means and operates said coupling means in response to rotation of said knob from said operative position.

Claim 14

A combination as defined in claim 11, wherein said coupling lever is connected with and is pivotable by said input means.

Claim 15

A combination as defined in claim 1, further comprising retaining means for holding said coupling means in an operative position in which said coupling means connects said rotary unit with said prime mover while said rotary unit is indexed during fade-in and while said actuating means is out of said operative position.

Claim 16

A combination as defined in claim 14, wherein said rotary unit comprises means for disengaging said retaining means from said coupling means in response to indexing of said rotary unit to a predetermined position on completion of exposures with fade-out effect.

Claim 17

A combination as defined in claim 1, further comprising locking means for holding said release means in an operative position, said fading means further comprising input means for disengaging said locking means from said release means in response to movement of said actuating means from said operative position.

Claim 18

A combination as defined in claim 16, wherein said release means has a slot and said locking means is arranged to enter said slot in the operative position of said release means and in response to movement of said actuating means to said operative position.

Claim 19

A combination as defined in claim 1, wherein said fading means further comprises input means movable by said actuating means to operate said coupling means so that the latter connects said rotary unit with said prime mover in response to movement of said actuating means to said operative position, and holding means for preventing disengagement of said rotary device from said prime mover while the camera makes exposures with fade-in effect and while said actuating means is out of said operative position.

Claim 20

A combination as defined in claim 18, wherein said holding means comprises a first holding member on said input means and a second holding member engaging said first holding member in response to movement of said actuating means to said operative position, said rotary unit having means for disengaging said second holding member from said first holding member in response to such displacement of said rotary unit which the latter performs during the making of exposures with fade-in effect.

Claim 21

A combination as defined in claim 1, further comprising controlling means for maintaining said diaphragm means in that position in which the size of said aperture is zero during rearward transport of said length of film.

Claim 22

A combination as defined in claim 20, wherein said controlling means comprises a member which receives motion from said rotary unit and maintains said diaphragm means in closed position while said rotary unit is being indexed through said second distance.

Claim 23

In a motion picture camera, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary driving member which is driven by said motor, and means for rotating the takeup reel of a film containing magazine at least while said driving member is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; release means operable to start said motor and including a normally open first switch in the circuit of said motor, said motor circuit further including a normally open second switch connected in parallel with said first switch; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said driving member in response to movement of said actuating means to said operative position to thereby index said rotary unit when said driving member rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect and closing means for closing said second switch during indexing of said rotary unit through said first and second distances so that said circuit remains completed irrespective of the position of said first switch.

Claim 24

In a motion picture camera, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary driving member which is driven by said motor, and means for rotating the takeup reel of a film containing magazine at least while said driving member is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; release means operable to start said motor and including a normally open first switch in the circuit of said motor, said motor circuit further including a normally open second switch connected in parallel with said first switch; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said driving member in response to movement of said actuating means to said operative position to thereby index said rotary unit when said driving member rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect and closing means for closing said second switch during indexing of said rotary unit through said first and second distances so that said circuit remains completed irrespective of the position of said first switch.

Claim 25

A combination as defined in claim 22, wherein said rotary unit comprises a disk-shaped element which cooperates with said closing means to maintain said second switch in closed position.

Claim 26

In a motion picture camera for use with motion picture film which is stored in magazines having a takeup reel rotatable in a single direction to collect the film thereon, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary driving member which is driven by said motor, and means for rotating the takeup reel of a film containing magazine while said driving member is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film, said means for rotating comprising a rotary output member which is coupled to the takeup reel of a magazine when the latter is properly inserted into the camera; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said driving member in response to movement of said actuating means to said operative position to thereby index said rotary unit when said driving member rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect, and blocking means for holding said output member against rotation in response to movement of said actuating means to said operative position so that the takeup reel cannot be rotated by said motor during the making of exposures with fade-out effect.

Claim 27

In a motion picture camera for use with motion picture film which is stored in magazines having a takeup reel rotatable in a single direction to collect the film thereon, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary driving member which is driven by said motor, and means for rotating the takeup reel of a film containing magazine while said driving member is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film, said means for rotating comprising a rotary output member which is coupled to the takeup reel of a magazine when the latter is properly inserted into the camera; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said driving member in response to movement of said actuating means to said operative position to thereby index said rotary unit when said driving member rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect, and blocking means for holding said output member against rotation in response to movement of said actuating means to said operative position so that the takeup reel cannot be rotated by said motor during the making of exposures with fade-out effect.

Claim 28

A combination as defined in claim 24, wherein said blocking means comprises a pawl and said output member has ratchet teeth which are engaged by sAid pawl in response to movement of said actuating means to said operative position.

Claim 29

A combination as defined in claim 25, wherein said fading means further comprises input means receiving motion from said actuating means and arranged to move said pawl into engagement with said teeth in response to movement of said actuating means to said operative position.

Claim 30

A combination as defined in claim 24, for use with motion picture film which is stored in magazines of a second type having a takeup reel rotatable in two directions and insertable into the camera upon removal of a magazine of the first type, said fading means further comprising means for disengaging said blocking means from said output member to permit rotation of the takeup reel in a magazine of the second type during the making of exposures with fade-out effect and during rearward transport of the film subsequent to fade-out.

Claim 31

A combination as defined in claim 27, wherein said means for disengaging said blocking means from said output member comprises detector means arranged to scan coding means provided on magazines of the second type.

Claim 32

In a motion picture camera a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary worm which is driven by said motor, and means for rotating the takeup reel of a film-containing magazine at least while said worm in rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit having a set of ratchet teeth, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said worm in response to movement of said actuating means to said operative position to thereby index said rotary unit when said driving member rotates, said power train comprising a gear, means for moving said gear into mesh with said worm in response to movement of said actuating means to said operative position, and means for indexing said rotary unit in response to rotation of said gear including a pawl receiving motion from said gear and arranged to index said rotary unit stepwise through the intermediary of said ratchet teeth, said fading means further including adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, and arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transport mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect.

Claim 33

In a motion picture camera a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary worm which is driven by said motor, and means for rotating the takeup reel of a film-containing magazine at least while said worm in rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit having a set of ratchet teeth, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said worm in response to movement of said actuating means to said operative position to thereby index said rotary unit when said driving member rotates, said power train comprising a gear, means for moving said gear into mesh with said worm in response to movement of said actuating means to said operative position, and means for indexing said rotary unit in response to rotation of said gear including a pawl receiving motion from said gear and arranged to index said rotary unit stepwise through the intermediary of said ratchet teeth, said fading means further including adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, and arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transport mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect.

Claim 34

In a motion picture camEra, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary driving member which is driven by said motor, and means for rotating the takeup reel of a film containing magazine at least while said driving member is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; means for changing the speed of said motor; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said driving member in response to movement of said actuating means to said operative position to thereby index said rotaty unit when said driving member rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size graudally decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, and arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect; and regulating means for determining the speed of said motor in response to movement of said actuating means to said operative position.

Claim 35

In a motion picture camEra, a combination comprising a film transporting mechanism including a prime mover having a reversible electric motor, a rotary driving member which is driven by said motor, and means for rotating the takeup reel of a film containing magazine at least while said driving member is rotated in a first direction corresponding to the operation of said motor during forward transport of motion picture film; means for changing the speed of said motor; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of said motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said prime mover in response to movement of said actuating means to said operative position, said coupling means comprising a power train connectable with said driving member in response to movement of said actuating means to said operative position to thereby index said rotaty unit when said driving member rotates, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size graudally decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length of motion picture film which was exposed with fade-out effect, and arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect; and regulating means for determining the speed of said motor in response to movement of said actuating means to said operative position.

Claim 36

In a motion picture camera for alternating use with film which is stored in magazines of a first type having a takeup reel rotatable in a single direction to collect the film thereon and with film which is stored in magazines of a second type having a takeup reel rotatable in two directions, a film transporting mechanism including a prime mover having a reversible electric motor; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of the motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said motor in response to movement of said actuating means to said operative position, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length Of motion picture film which was exposed with fade-out effect, arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect, said prime mover further comprising a rotary output member which is coupled to the takeup reel of a magazine of said first type when the latter is properly inserted into the camera and said fading means further comprising blocking means for holding said output member against rotation in response to movement of said actuating means to said operative position so that the takeup reel of a magazine of said first type cannot be rotated by said motor during the making of exposures with fade-out effect, and means for disengaging said blocking means from said output member to permit rotation of the takeup reel in a magazine of said second type during the making of exposures and during rearward transport of film in a magazine of said second type.

Claim 37

In a motion picture camera for alternating use with film which is stored in magazines of a first type having a takeup reel rotatable in a single direction to collect the film thereon and with film which is stored in magazines of a second type having a takeup reel rotatable in two directions, a film transporting mechanism including a prime mover having a reversible electric motor; release means operable to start said motor; adjustable diaphragm means defining a light-admitting aperture of variable size; and fading means including actuating means movable to and from an operative position in which said actuating means sets the fading means for operation with fade-out effect in response to starting of the motor in a forward direction, an indexible rotary programming unit, coupling means for connecting said rotary unit to said motor in response to movement of said actuating means to said operative position, adjusting means cooperating with said rotary unit to adjust said diaphragm means so that the aperture size gradually decreases to zero and the camera makes exposures with fade-out effect during indexing of said rotary unit through a first distance, reversing means controlled by said rotary unit and operative to change the direction of rotation of said motor in response to completion of indexing of said rotary unit through said first distance whereby said film transporting mechanism moves rearwardly that length Of motion picture film which was exposed with fade-out effect, arresting means for automatically stopping said motor in response to indexing of said rotary unit through such second distance which said rotary unit covers while said film transporting mechanism completes the rearward transport of that length of film which was exposed with fade-out effect, said adjusting means being arranged to automatically adjust said diaphragm means in response to renewed operation of said release means subsequent to stoppage of said motor by said arresting means and subsequent to movement of said actuating means from said operative position whereby the camera exposes with fade-in effect that length of film which was previously exposed with fade-out effect, said prime mover further comprising a rotary output member which is coupled to the takeup reel of a magazine of said first type when the latter is properly inserted into the camera and said fading means further comprising blocking means for holding said output member against rotation in response to movement of said actuating means to said operative position so that the takeup reel of a magazine of said first type cannot be rotated by said motor during the making of exposures with fade-out effect, and means for disengaging said blocking means from said output member to permit rotation of the takeup reel in a magazine of said second type during the making of exposures and during rearward transport of film in a magazine of said second type.