Zubehör

UPA - 510

Russisches Reisevergrößerungsgerät aus dem Jahr 1968

 

Exakt 8 kg wiegt der 43 x 36 x 15 cm große mit Vulkanfieber überzogene antrazitfarbene Koffer. Darin ein kompletter Vergrößerer für Schwarz-Weiß Verarbeitung bis ca. 24 x 30 cm Abzüge. Mehr wäre bei der Optik auch von Übel. Aber das ganze Reise Equipment ist recht solide und präzis verarbeitet und es fehlt tatsächlich nicht viel von dem, was einen Vergrößerer ausmacht:

- Negativbühne sowohl glaslos als auch mit Glas zu betreiben

- Negativmasken für die Formate 13 x 17; 18 x 24 und 24 x 36

- schwenkbarer Rotfilter

- Objektiv Industar I96U (Индустар И96У) 50mm f3,5 - f16; M39

- Filterschublade mit Mattscheibe

- Grob- und Feineinstellung mit Rollen auf Führungsschienen

- Justiermöglichkeit zur Lampenfocussierung

- Feststellschrauben zum Fixieren der gegenwärtigen Einstellungen

In knapp 5 Minuten ist das Gerät aufgebaut, für "unterwegs" sicherlich eine feine Sache. Genauso schnell ist es natürlich wieder im Koffer verschwunden und lässt sich mühelos verstauen. Die einzelnen Aufbauschritte sind auf meiner Bilderseite zu bestaunen.

Negativmasken für die Formate 13 x 17; 18 x 24 und 24 x 36

Objektiv Industar I96U (Индустар И96У) 50mm f3,5 - f16; M39

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Bedienungsanleitung in Englisch:

The UPA-510, a portable photographic enlarger focused manually and automatically, is a means for the projection enlargement on the screen of negative formats of 24x36 and 18x~4mm available on the 35-mm movie film, and of negative formats of 10 to l4mm on the 16mm movie film.

For enlargement in colour, use is made of correction light filters measuring 60x60mm. An autofocus device operates in a magnification range from 2.5x to 8x. Manual focusing covers a magnification range from 8X to 20X. A sharp image is not disturbed in transferring from the manual to the automatic mode of focusing and vice versa. DESIGN The enlarger substitutes the emulsion of a negative film frame for the screen, thus giving positive prints. The basic members of the enlarger (Fig. 1) are screen l, autofocus device 8, condenser 3, negative frame 2, and illuminator 4. The packing case serves as the screen. The packing case mounts a post holder in which lower post 10 is fixed by screw 1. The lower post screws into upper post 7 that carries autofocus device 8.

Except the upper post, the autofocus device consists of a bracket and projector. All these components interact through the agency of a lever-type mechanism that connects the post together with a built-in cam to a carriage with a tube. Moving the bracket along the post by means of rack-and-pinion mechanism 9 results in a precisely computed displacement of the tube carrying the objective so that the image stays in focus automatically as the enlarger is racked through the magnification range. Never disassemble the autofocus device (the upper post,) bracket and projector 1. The tube rigidly attached to a rod is in a movable coupling with the carriage whose roller rotatably slides over the slit in the rod; thus, rotating the roller by means of the rack-and-pinion mechanism displaces the tube with the objective with respect to the carriage, which provides manual focusing.

The enlarger comes with the Industar 50-Y-1 objective of a 53.4-mm focal length. Condenser 3 consists of a body, a lid and a tray. The body and lid mount condenser lenses. The tray positioned in the space between the lenses houses correction light filters (four as a maximum) used for enlargement in colour.

Screw 6 couples the body to the lid, thus giving an easy access to the condenser interior in the case of lens contamination. Detachable negative frame 2 provides for free insertion and movement of the film which is flattened by a glass plate and guides entering into the film perforations. To allow for film movement, apply the depressing force downward onto the negative film rest. On removal of the force, the film is clipped in place.

The negative frame has two detachable framing inserts whose frame windows measure 18x24 and 10x14mm, respectively. Illuminator 4 consists of a cover mounting a lamp holder, and upper and lower enclosures which are connected by a rotatable latch where, the clamps of the upper enclosure enter the slots on the lower one.

The illuminator uses an incandescent lamp, krypton, matted or coiled-coil, rated for 127/220 V and 60 V as a maximum. The lamp with its holder is fixed to rod 5 which helps adjust evenly the illumination of the screen by axial and radial displacements of the rod in a joint. The packing case has a shock-absorbing foam plastic material cemented to its interior, thus providing good storage and transportation conditions.

PREPARATION PROCEDURE

Prior to operating the enlarger, take it out of the packing case and assemble its members as follows:

1. Close the packing case and lock the latches:
2. Screw the lower, post into the upper one as far as it will go.
3. Insert the autofocus device into a port on the case cover, lower the device until it sits in place in the post holder and install screw 11. If a picture frame is used, raise the lower post in the post holder and fix it with screw 11 by setting the screw in this case in the lower groove of the post. Be sure that the height of the picture frame does not exceed 22 mm. For frames smaller in height, use adjustment spacers.
4. Place lower enclosure 1 (Fig. 2) of the illuminator onto she condenser assembly and install the attachment screw.
5. Mount lid 2 with the mains connecting cord and the lamp on to upper enclosure 3 and join the enclosures.
6. Set negative frame 4 into the slot in the projector body. When a narrow width film is handled, the desirable framing insert is inserted in the frame window of the negative frame. Evenly adjust the screen illumination by proper displacements of the rod carrying the lamp holder.

If matted (pearl) lamps are not available, place a ground glass in the light filter tray. Always use an incandescent lamp rated for 60 V as a maximum.

OPERATINO PROCEDURE

With the lamp energised, obtain the required magnification by moving the bracket over the post with the help of the rack-and-pinion mechanism; operate the clamping screw to fix the obtained condition. Up to a 8X magnification, the image is projected on to the enlarger screen using the autofocus device. For larger magnifications, turn the enlarger post through 180° and proceed to project the image on a screen configuration, say, floor or stool below the enlarger screen.

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Copyright © Reinhard Krahé