Dicomed was one such early provider of digital color film recorders. Traditional film recorder manufacturers have all but vanished from the scene or have evolved their product lines to cater to the motion picture industry.
This, combined with the increase in international and independent film production, will keep the demand for film recording steady for at least a decade. Although significant advances in large venue video projection alleviates the need to output to film, there remains a deadlock between the motion picture studios and theater owners over who should pay for the cost of these very costly projection systems.
The terms " slide" and "slide deck" are still commonly used in presentation programs.Ĭurrently, film recorders are primarily used in the motion picture film-out process for the ever increasing amount of digital intermediate work being done. However, most cinemas nowadays use Digital Cinema Packages on hard drives instead of film stock.įilm recorders were among the earliest computer graphics output devices for example, the IBM 740 CRT Recorder was announced in 1954.įilm recorders were also commonly used to produce slides for slide projectors but this need is now largely met by video projectors that project images directly from a computer to a screen. They are also used to produce the master copies of movies that use computer animation or other special effects based on digital image processing. For preview, archiving, and small-volume reproduction, film recorders have been rendered obsolete by modern printers that produce photographic-quality hardcopies directly on plain paper. Uses įilm recorders are used in digital printing to generate master negatives for offset and other bulk printing processes. Some models have detachable film holders to handle multiple formats with the same camera or with Polaroid backs to provide on-site review of output before exposing film. Single-image 4×5 film and 8×10 are often used for high-quality, large format printing. The 35mm negative film and transparencies are popular because they can be processed by any photo shop. The exposed film is developed and printed by regular photographic chemical processing.įilm recorders are available for a variety of film types and formats. The LVT is basically a reverse drum scanner. Some machines can burn 120-res or 120 lines per millimeter. In one example, the light valve was a liquid-crystal shutter, the light beam was steered with a lens, and text was printed using a pre-cut optical mask. Higher-quality LVT film recorders use a focused beam of light to write the image directly onto a film loaded spinning drum, one pixel at a time. Typical resolutions for digital recorders were quoted as 2K and 4K, referring to 2048×13×2732 pixels, respectively, while analog recorders provided a resolution of 640×428 pixels in comparison. Digital CRT recorders provide a higher resolution at a higher cost compared to analog recorders due to the additional specialized hardware. The analog film recorder uses the native video signal from the computer, while the digital type uses a separate display board in the computer to produce a digital signal for a display in the recorder. CRT film recorders are further divided into analog and digital types. The filter wheel, as well as the camera's shutter, aperture, and film motion mechanism are usually controlled by the recorder's electronics and/or the driving software. The three filters are usually mounted on a motor-driven wheel. This approach yields better resolution and color quality than possible with a tri-phosphor color CRT. A film recorder exposes film through various mechanisms flying spot (early recorders) photographing a high resolution video monitor electron beam recorder ( Sony HDVS) a CRT scanning dot (Celco) focused beam of light from a light valve technology (LVT) recorder a scanning laser beam (Arrilaser) or recently, full-frame LCD array chips.įor color image recording on a CRT film recorder, the red, green, and blue channels are sequentially displayed on a single gray scale CRT, and exposed to the same piece of film as a multiple exposure through a filter of the appropriate color. The image is fed from a host computer as a raster stream over a digital interface. All film recorders typically work in the same manner.
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