Arnold&richter Cine Technik Gmbh&co. Betriebs Kg

Klaus Jacumet

Michael Koppetz

Robert Kandleinsberger

Peter Giegerich

Volker Bahnemann

A motion picture camera arrangement comprises a motion picture camera and a display device, wherein the motion picture camera has an image sensor for taking images at a variable frame rate and wherein the display device displays the taken images at a settable display rate. A method of operating the motion picture camera arrangement comprises the steps of: selecting a frame rate; determining a setting value for the display rate of the display device, wherein the setting value corresponds, in dependence on the selected frame rate, either to the selected frame rate or to a product or quotient of the selected frame rate and a whole-number multiplier or divisor; operating the image sensor at the selected frame rate; and operating the display device using the determined setting value for the display rate.

Motion picture camera arrangement and method of operating a motion picture camera arrangement

The invention relates to a method for processing film images which are deviated from the film-recording optical path of a moving picture camera and which are converted into digital assist signals (AS) with the aid of an image sensor which is arranged in the assist optical path (S) of the moving picture camera which is periodically interrupted according to the image-recording frequency of the moving picture camera. Said assist signals are fed to a data processing device at an image frequency corresponding to the image-recording frequency of the moving picture camera. Said data processing device processes the assist images derived from the digital assist signal (AS) at the image-recording frequency of the moving picture camera. In order to display the assist images at an assist frequency or the image-recording frequency of the moving picture camera, the data processing device transmits the digital assist signals (AS) to a digital storage device or transmits them to a monitor in order to display the assist images at a standardized image frequency, e.g. 24 images/sec. The camera assist device is adapted to the peculiarities of the moving picture camera and enables, in particular, representation of special effects such as slow motion and quick motion which are generated with the aid of a moving picture film.

Method for processing film images deviated from a film recording optical path of a moving picture camera

A method for controlling the contrast range of the image recording light falling on an image recording medium by means of control light coupled into the optical path of the image recording light, which is composed of several base colors whose brightness is adjusted independent of each other, is provided. The brightness at least of those base colors of the control light is varied, whose dynamics in the recorded image go beyond the admissible dynamic range.

Method and device for controlling the contrast range of an image capturing light falling on an image capturing medium

A method for automatically correcting frame faults in video assist frames of a video assist system in a video beam path branched off from a capture beam path of a motion-picture camera, a ground glass screen being arranged in said video beam path, is provided. The video assist system is calibrated by capturing at least one video assist frame of a single-colored, unstructured and uniformly illuminated, flat capture object for a predefined diaphragm aperture of the camera lens and storing it as a video assist calibration frame in a frame store, wherein the stored and inverted video assist calibration frame is superimposed on the video assist frames captured after the calibration.

Method for automatically correcting frame faults in video assist frames of a video assist system

A method for monitoring set parameters of a motion-picture camera is provided. Film images, which are extracted from a recording beam path of the motion-picture camera and which are converted into digital assist signals by an optoelectronic transducer are arranged in an assist beam path of the motion-picture camera. Digital assist signals are output to a processing unit with an image frequency matching the image recording frequency of the motion-picture camera or with an assist image frequency, to which processing unit recording, control and/or status signals of the motion-picture camera or of devices connected to the motion-picture camera are additionally fed as metadata. The processing unit analyzes digital assist images composed of the digital assist signals and outputs digital output data and control signals to control modules of the motion-picture camera and/or to a network, and/or as analog or digital video signals to a monitor connected to the processing unit.

Method for monitoring set parameters of a motion-picture camera

A viewfinder system for a camera, in particular a movie camera, in which there runs a viewfinder beam path that is diverted from a recording beam path for film exposure is provided. The viewfinder system comprising an eyepiece, an eye closure, a shutter for masking out stray light penetrating into the camera via the viewfinder system, and a control device that triggers the shutter and is connected to a sensor. The viewfinder system further comprising a sensor device for contactless detection of an eye or head, located at the eye closure of the viewfinder system, of a person viewing the picture to be recorded through the eyepiece.

Viewfinder system for a camera

A method for processing film images which are extracted from a recording beam path of a moving image camera and which are converted into digital assist signals by an optoelectronic transducer arranged in an assist beam path of the moving image camera is provided. Said assist beam path being interrupted periodically depending on the image recording frequency of the moving image camera, which digital assist signals are output to a processing unit with an image frequency matching the image recording frequency of the moving image camera or with an assist image frequency, to which processing unit recording, control and/or status signals of the moving image camera or of devices connected to the moving image camera are fed as metadata. The processing unit contains image conditioning functions and/or image analysis functions.

Method for processing film images extracted from a film recording beam path of a moving image camera

The invention relates to an apparatus for the recording of image data and meta data which contain information on the image data&#x2014;such as recording parameters&#x2014;with a digital camera which includes at least one image sensor for the generation of the image data and with meta data image generation means by which the meta data can be recorded in the form of image information detectable by the human eye so that the image data and the meta data can be generated as common image information, with the meta data image generation means including display means for the visual presentation of meta data, in particular a display, and/or data processing means for the electronic generation of the meta data inside the image data, in particular a controller.

Apparatus for the recording of image data and meta data

The invention relates to a device for improving image quality in focusing screens of an optical representation system of a movie camera, having a movably mounted translucent disk in a sandwich structure, a drive device moving the movable disk in the plane of the disk and a stationary disk mounted parallel to the plane of the movable disk with an image field marking. The drive device is connected to the movable disk and moves the movable disk at least temporarily, for instance during the &ldquo;standby mode&rdquo; of the movie camera, at a frequency depending on the image frequency of the movie camera, the video frequency of a video reflecting device of the movie camera or motion picture camera or the brightness of the image or subject to be recorded or with a high motion frequency independent of the operating state of the movie camera.

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Munich, Germany

Klaus Jacumet