DE1897179U - PHOTOGRAPHIC CAMERA. - Google Patents

Description

^ ■ 223550-26.3.64

AGFA AKTIENGESELLSCHAFT March 25, 64

Leverkusen ■ 10 / Al / St.

MF 859

Photographic camera

The innovation pertaining to a photographic camera has the purpose of simplifying the operation for the user at the Brightness-appropriate setting of those influencing the exposure Adjuster to create.

According to the innovation, this is achieved by using the following features achieved?

A built-in light meter with a measuring instrument, the pointer is positioned over a camera beweglieh fixed Beliehtungswertskala, and an arrangement for setting the Filmempfindiiehkeit, preferably a rotatably mounted measuring instrument as a whole%

a receiving space for a film cartridge, the one the sensitivity of the inserted film wearing,· -___

an adjusting gear chain that interacts with the control system for actuating the arrangement for adjusting the film sensitivity ι

for MF 859

■ one adjustable according to a scale with exposure time values Exposure time adjuster to which a continuous row of exposure values is plotted and

an aperture adjuster, the one with the exposure value series interacting setting mark carries »

According to a variant of the innovation, the configuration can also be made so that the series of exposure values is plotted on the diaphragm adjuster and the exposure time adjuster bears the setting mark.

Applying these features see the advantage that after preselecting an exposure time, the user of the camera only has to turn the aperture adjuster until the setting mark is reached points to the value of the lending value series, which also the Indicates the pointer of the built-in light meter. In practice, therefore, only a single adjuster is usually to be used actuate. The same ease of use is achieved which is usually only offered by a camera with a built-in exposure meter via a sewing gear chain with the exposure time settings and cover is coupled. Compared to these types of cameras, in particular due to the omission of the sewing gear chain, a considerable simplification of the structure.

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MF 859

Further features and advantages can be found in the subclaims in connection with the description of an exemplary embodiment based on the drawing. Biese shows the novelty essential parts of a camera viewed from above «

In the illustrated embodiment, the camera housing is designated as a whole by 1 and the locking tube by 2. A film cartridge 3 can be inserted into a receiving space (not shown in more detail) in the camera housing 1. The film cartridge j5 has a control _{stop 4 on 3,} the distance of which from a stop surface 5 of the cartridge J> represents a measure of the sensitivity of the inserted film. When the cassette is correctly inserted, the stop surface 5 rests on a counter surface, not shown, of the camera for fixing the position of the film cartridge 5,

With the Steueransehlag 4 one end of an adjusting lever can β cooperate around a pin 7 fixed to the camera is rotatably mounted »At the other end of the setting lever β is under the action of a return spring 8, a stop pin 9 one mounted rotatably about an axis 10 as a whole Measuring instrument 11 instead of a simple transmission lever 6, a transmission gear chain consisting of several mutually movable parts can of course also be used Can also be used * Another.

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MF 859

per se fee-known arrangement for setting the film speed, for example an adjustable resistor in the measuring circuit or an adjustable diaphragm in front of the light-sensitive Recipient, find use.

The measuring instrument 11 is connected in a manner known per se, not shown, to a light-sensitive receiver and has a pointer 12> which together with a Exposure value scale 1 ^ under a window 14 on the top of the camera is visible.

An exposure time adjuster 15 and a diaphragm adjuster 16 are rotatably mounted on the closure tube 2 * each of which is ring-shaped. The exposure time adjuster 15 bears a mark 1J with which it can be set according to a fixed scale 18 with exposure time values applied to the tube 2 15 and the mark 17 are located on the tube 2. A number 19 of exposure values is also applied to the exposure time adjuster 15. The diaphragm adjuster 1β has an adjustment mark 20 which can be compared to a value of the jleihe 19. The row 19 and "dj. @ Setting mark 20" are advantageously arranged on the upper clips of the rings forming the setting marks.

MP 859

The user of the camera can, therefore, not only at a glance the pointer 12 with the associated scale 1j5 * but also the Send setting mark 20 with exposure value series 19 *

When a film cartridge J5 is inserted, the measuring instrument 11 is rotated as a whole by means of the control stop 4 and the setting lever β to take account of the film sensitivity. The pointer 12 now indicates on the fixed scale Tj5 the value that corresponds to the actually determined brightness. For correct adjustment of the camera aperture adjuster is then as long to rotate _s until its alignment mark 20 that value of the Beliohtungswertreihe 19 facing the also the pointer 12 indicates on the scale 1J5.

A mean exposure time value on scale 18 is useful colored or otherwise specially highlighted. The exposure time adjuster remains for all normal exposures 15 set to this value. Only with border sanctities or to achieve special effects, for example sharpening a fast-moving subject, must then the mark 17 is compared to another value on the scale 18 before the aperture adjuster Τβ is set. It can be advantageous here to also assign an aperture scale to the aperture adjuster 16, which then, to the Not to confuse the user of the camera unnecessarily, expediently on the underside of the ring-shaped adjuster or the tube 2 is arranged «

Claims (2)

-6- RA.223380 * 26.1 Protection claims 1. Photographic camera, indicated by a built-in exposure meter with a measuring instrument (11) j whose pointer (12) is movably arranged over a camera-fixed exposure value scale (15)
is, and an arrangement for adjusting the Filraensensitivity, preferably a measuring instrument rotatably mounted as a whole a receiving space for a film cartridge (3), the one
indicate the sensitivity of the inserted film
Sfceueranschlag (4) carries j an adjusting gear chain interacting with the control stop (4) (6, 7) to operate the film speed adjustment device j an exposure time adjuster (15) which can be set according to a scale (18) with exposure time values and to which one
continuous series (19) of exposure values is plotted and an aperture adjuster (1 6) that has a setting mark (20) that interacts with the exposure value series * MF 859 2. Camera according to claim Λ, characterized in that the series of exposure values is applied to the aperture adjuster and the exposure time adjuster carries the setting mark .. 3 # camera according to claim 1 or 2, characterized ₉ that the measuring instrument (11) and the associated Beliehtungswertskala (15) housed in the camera shell and the scale (13) visible with the pointer (12) beneath a window (14) in top of the camera are arranged « 4ο camera according to one of the preceding claims, characterized characterized in that the adjuster for exposure time and aperture (15 * 16) can be rotated around the shutter tube (2) formed rings and the exposure value series (19) and the setting mark (20) on the upper halves the circumference of the rings are arranged. For this 1 sheet of drawing