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Filmmaking terms starting with 8 include small-gauge film, videotape, image bit depth, 8K capture and colour-conversion filters. This section separates formats with similar names and explains what the number tells you about the equipment, image or optical treatment.
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8-Bit Video
Video using up to 256 numerical code values for each encoded component. The actual usable range depends on the signal specification; the label does not promise that every code value represents visible picture information. Compared with higher bit depths, 8-bit can be less forgiving of heavy grading and smooth gradients. Bit depth is separate from resolution, compression and chroma subsampling, and does not by itself determine a camera’s dynamic range.
8-Perf 35mm / VistaVision
A horizontal 35mm film arrangement advancing eight perforations per frame. It is associated with VistaVision and provides a larger image area than conventional vertical 4-perf capture. The format has been used for principal photography and visual-effects plates. It is still 35mm film: the “8” describes the perforation advance, not an 8mm gauge or 8K digital raster.
8K Resolution
A resolution family with roughly eight thousand horizontal pixels. UHD 8K is 7680 × 4320, while some cinema-camera modes use 8192 × 4320 or other heights. The capture raster and delivery raster may differ. Extra pixels can be useful for reframing, stabilisation and downsampling, but increase workflow demands and do not repair poor focus or lens performance. Specify dimensions, aspect ratio, codec and frame rate together. Compare 4K.
8mm Film
A small-gauge photochemical motion-picture format. Regular 8 and Super 8 both use film approximately eight millimetres wide, but differ in perforation arrangement, image area and camera or projector requirements. They are not interchangeable merely because the width matches. The format is associated with home movies, independent work and a distinct small-gauge texture. It is entirely different from 8mm videotape, which records an electronic video signal magnetically.
8mm Video / Video8, Hi8 and Digital8
A family of magnetic videotape formats using eight-millimetre-wide tape in a cassette. Video8 and Hi8 are analogue recording systems; Digital8 records digital video on compatible tape. Sharing a cassette family does not guarantee playback compatibility across every device or recording format. Check the original recording system and the playback machine before planning a transfer. These are video formats, not 8mm or Super 8 film.
8′ × 8′ Frame
A nominal eight-foot-square grip frame for diffusion, bounce or light-control fabric. It can create a larger apparent source or cover more area than a smaller frame when positioned appropriately, but size alone does not identify the fabric or guarantee softer light at any distance. The assembled surface can catch considerable wind. Plan suitable support, securing, crew and conditions rather than treating it as an enlarged hand reflector. Compare 6′ × 6′.
80A Colour-Conversion Filter
A blue camera filter designed to convert approximately 3200K tungsten illumination for use with film balanced around 5500K daylight. It goes in the camera’s optical path, rather than changing the lamp itself, and costs exposure. It is the opposite general direction from the warming 85B conversion. Digital white balance can change colour interpretation, but is not physically the same operation as filtering the light reaching a film stock or sensor.
85 Colour-Conversion Filter
An amber camera filter nominally converting approximately 5500K daylight to a 3400K tungsten balance. It is traditionally used when shooting an appropriate tungsten-balanced stock in daylight. It is not identical to 85B, whose nominal conversion is to 3200K. The correct choice depends on the stock, illumination and intended result, and exposure compensation is required. See CTO for colour conversion applied at a light source.
85B Colour-Conversion Filter
An amber camera filter nominally converting approximately 5500K daylight to 3200K for tungsten-balanced film. It is a stronger warming conversion than a standard 85 filter’s 3400K target. Allow for the filter’s light loss when setting exposure, and confirm the stock and lighting conditions. A digital camera’s white-balance setting can partly counteract a warming filter, so the complete camera setup matters to the final look.
Names that look similar can refer to very different formats or tools. Confirm the gauge, recording system, filter type or image specification before making a production decision. Continue with terms starting with 9, or explore the main dictionary hub.
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