Lighting gujarati and eng


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Lighting gujarati and eng

  1. 1. LIGHTING FOR VIDEO PRODUCTION Manish bhoi Technical Assistant
  2. 2. LIGHT • The term generally applied to the radiant visible energy that emits from a source. • a light is usually measured in lumens or candlepower. when light strikes a surface it is either absorbed, reflected, or transmitted. • Light which exhibited both waveform and particulate characteristics travel in straights lines through space at a speed of 186,282 miles per second.
  3. 3. • • •
  4. 4. Colour Temperature • Lighting. A method of measuring the colour value of a light source. Measured in degrees KELVEN. Daylight has a colour temperature of nominally 5500K (Kelvin)
  5. 5. • • •
  6. 6. Back Light • Film and TV light placed behind the subject often mounted light. The amount of light can be controlled with BARN DOORS. Used to illuminate the back or side of the subject to create depth and solidity by making the subject stand out the background. Often used to highlight an actress's hair and create a holo effect.
  7. 7. • • • •
  8. 8. Back Light • Separates the subject from the background. also called separation light it refer to a light source pointed away from the background (as opposed to background light) and aimed toward the camera lens from above and behind the subject (as a hair light) or behind and to the side (as a kicker) The backlight is often eschewed by professionals who disdain the use of unmotivated light.
  9. 9. Background Light • Illumination directed at a wall or background of a set used to define the character of the background surface and separate the background from the subject.
  10. 10. • •
  11. 11. Balance Lighting • The relational ship of illuminated areas and shadows in a scene that allows • 1. surfactant exposure for photographing the subject • 2. movement of camera between areas of different illumination that will not detract from the initial exposure and • 3. a satisfying compositional effect.
  12. 12. • • •
  13. 13. Butterfly • A large net or silk measuring at least 4'x4' stretched on a frame and supported by a single stand. The butterfly commonly used outdoors to shade or diffuse direct sunlight, is big enough to cover a medium or two shot and reduce the harsh look of hard sunlight. when a translucent material is used on a butterfly frame it is called a silk.
  14. 14. Barn doors • Device with hinged metal flaps, usually four that can be attached to the front of TV or film lamp. controls spillage of light into unwanted areas, and restricts the direction and size of the light. Is both pivotal and rotatable so that the light beam can be shaped.
  15. 15. • • • •
  16. 16. barn door • A lighting accessory made up of two or four hinged blades that attaches to the front of the lighting fixture. The barn door can be rotated and the blades independently adjusted to direct and shape the beam control; spill light, create shadows, and prevent the lamp from flaring in a camera lens.
  17. 17. Blue Gel • Lighting special blue, heat resistant, plastic sheet that can be bought in a roll. used to put over a film lamp to match the colour Temperate of daylight in a film lighting set-up.
  18. 18. • • •
  19. 19. Bounce Light • A soft light source produced by pointing a film at a white reflective surface such as a REFLECTOR so that the light bounced off the surface. can be used to light a domestic room by using a BLONDE film lamp to bounce light off a white ceiling.
  20. 20. • • • •
  21. 21. Diffusion • Lighting. A way of varying the intensity of a light source and making it softer by using a diffuser. A diffuser is translucent material that is fixed over front of the lamp to soften highlight reduce contras and increase the spread of light from the lamp.
  22. 22. • • •
  23. 23. Diffusion • A phenomenon that occurs when light is scattered as when it is filtered through a translucent material that soften highlight and shadows reduce contras and increase the size of a source. • • •
  24. 24. Dimmer • A rheostat or other device that reduce or increases the flow of electrify to a light or bank of lights, there by turning up or down the intensity of illumination. • Dimmers that operate in this way are of limited use with colour films as they affect the colour temperature of the lamps.
  25. 25. • • •
  26. 26. down light • A beam of light focus on a subject from above. •
  27. 27. Effect Light • A light that highlights a certain details in s scene. Effects lighting is often achieved with small spotlights such peppers or inline which can be hung above the set to throw small pools on backgrounds or objects.
  28. 28. • •
  29. 29. Exterior lighting • Both natural and artificial lighting for exterior shots. •
  30. 30. Eye Light • A small barn door or snouted spotlight mounted on near the camera to give sparkle to eyes and teeth of a subject. •
  31. 31. FADER • Slide volume or gain control. •
  32. 32. Fill light • Any soft light that fills in areas of shadow cast by a key light, thereby decreasing image contras. • The fill light is frequently placed near the camera on the side opposite the key. • •
  33. 33. Filter • A filter made of glass or gel is placed in front of the lens of a camera. Used to change the way light reaches the lens, e.g. by adding the colour or by DIFFUSING the light in a way that will create a particular 'look' to a seine. A Grade Filter can be used in a wide Shot of countryside to make gray sky après blue but not change the colour of lower third of picture.
  34. 34. • • • •
  35. 35. Filter • Any translucent material used to change the colour or quality of light passing through it. • Camera filters made of optically clear glass or gel are used in front of or behind the camera lens and affect the entire image. • Light filters are used to alter a particular beam of light and allow more tuning and greater control.
  36. 36. Flare • Glare of light, usually from a reflective surface , on a person or on the set. that is causing a bright flash light. Seen through the camera this will upset the lighting cameraman and can ruin a take.
  37. 37. • • • •
  38. 38. Flat Lighting • Characterless, texture less light casts very shallow shadows often emanating from the direction of the camera observer.
  39. 39. • •
  40. 40. Flood • A large broods field of projected light that illuminates a large area, as opposed to spot lighting. also any lamp which can be extended to double the area of the flag.
  41. 41.
  42. 42. Fluorescent Lamp • A tubular lamp wherein alternating current causes electrons to bombard mercury atoms which in turn stimulate phosphor coating its envelope to emit visible light. Most fluorescent illumination persists only in five wavelength.
  43. 43. • •
  44. 44. Flux • The rate of light energy measured in Lumens ( Luminous Flux) •
  45. 45. Fuse • An electrical safety device that breaks a circuit when there is danger of overloading. • A fuse generally consists of a metallic base or two contract and contains a piece of metal that melts at a temperature far below the melting point of the circuit wiring. • when a circuit is overloaded the metal will melt and break the circuit
  46. 46.  
  47. 47. Generator • An internal combustion engine that drives a dynamo and creates electricity as for lighting and other application. Generator s provide a relatively safe, reliable power source and available in sizes from eight amp motors up to 300 amp quiet tractor trailer units.
  48. 48. • • •
  49. 49. Glare • Light reflecting off shine or secular surfaces.
  50. 50. GEL • Fireproof plastic sheeting in a variety of colours used to cover the lens of a film lamp to change the colour Temperature of the light. e.g. the colour Temperature of stranded tungsten film limo does not match of day light It has too much orange in it. so used the blue gel to match the colour temperature of day light.
  51. 51. • • •
  52. 52. Hard Light • Direct light from a concentrated, usually FOCUSABLE, source producing strange highlight and dark shadows, Lamps that produce hard light include a BLONDE a REDHEAD or an HMI. • Bright sunlight is a good source of hard light that casts well defined shadows and gives sharply define image. Can be too bright for some situations without use of a filter.
  53. 53. • • • • • •
  54. 54. Hard Light • A relatively small, direct and often focusable source that creates strong highlights and dense well define shadows.
  55. 55. Hertz • A measurement for waveform frequency in cycles per second. Named for the German physicist Heinrich Hertz. •
  56. 56. Holo Effect • An undesired modulated glow of illumination around the contour of an image, usually caused by strong backlighting or by ablation in the film emulsion.
  57. 57.
  58. 58. Halogen • A class of elements including iodine, bromine, fluorine, and chlorine. Halogen gases ( such as iodine) used in tungsten lamps are known as regenerative gases because they redeposit boil-off particles and prolong the life of the filament.
  59. 59. • •
  60. 60. • A film light that HMI produces white light of daylight colour Temperature from 1200 watts going up to 18000 watts. The name if an acronym of the symbol Hg for mercury M for medium arc, and I for iodides also knows as a modified high-intensity discharge lamp.
  61. 61. H.M.I • •
  62. 62. HMI
  63. 63. Intensity • The strength of a light source independent of the subject. Luminous intensity. •
  64. 64. Inverter • An electric device converting direct current to alternating current. •
  65. 65. Kelvin • Degrees Kelvin is a measurement of heat, used to describe the colour temperature of light. Blue light has a high temperature and red light a low temperature. • It is based on the Celsius scale but begins at absolute zero (-272 degree C) . • •
  66. 66. KEY LIGHT • The main light source to illuminate a subject in a lighting set-up. In an Interview this is the main light to illuminate the face and body. It is usually placed in front of the subject and close to the camera but off set and slightly raised • • •
  67. 67. KILOWATT • Unit of electricity. One kilowatt is 1000 watt. Film light are usually known by their consumption of electricity such as this lamp is 2K (2000 kilowatt). • • 2k
  68. 68. LIMBO EFECT • An area of no defining characteristics an effect often produced by a flatly illumininated cyclorama or seamless paper backdrop. The limbo effect is sometimes used to isolate and separate a subject from a featureless background.
  69. 69. Lighting Plan • A specially drown diagram of a TV or film STUDIO showing the precise location of each lamp indicating which ones and type are to be used for particular production
  70. 70. Lighting Rig • The metal structure that is suspended from the ceiling of a TV studio to hold the large number of lamps required for a TV show or film. • At rock concord OBs and film sets the lighting rig refer to the whole vast lighting set-up and support system.
  71. 71. Reflector • Flat device with a very reflective surface in silver gold or white, which recycles light from a light source such as the sun or a film light Delivers a relatively soft light. Can be made of strong fold-up material and hand held or be larger and more rigid with its own stand. • A serviceable reflector can be a made out of a rigid sheet of white polystyrene held up by clipping it onto a lighting stand. A reflector is a versatile way of lighting a subject when filming in sunny Locations
  72. 72. • •
  73. 73. SOFT LIGHT • Diffused or reflected light. Use in programme making as a fill light or as a way of lighting a subject that create a naturalistic look and does not cast shadow. Created by using a gel or a diffuser such as scrim that softens highlights and shadow. soft lighting effects can also be created by using reflector or bounce light. The largest and cheapest soft light source is a slightly overcast sky there are no highlight.
  74. 74. • • • • • •
  75. 75. scrim
  76. 76. Alternating Current (AC) • Electrical current that reverses directional flow at regular intervals. • in the US electrical current supplied by power companies alternates at a rate of 60 Hertz (Hz)or cycle per second. • The standard for Europe and the uk is 50 Hertz. • India uses 230 Volts, 50 Hz alternating current as the power source.
  77. 77. Artificial Light • Light that emanates from any source other than the sun or sky. •
  78. 78. Available light • Light existing naturally within a given area. Documentaries independent films and low budget productions are often shot using only available light.
  79. 79. Cross Key Lighting • An economical lighting configuration where two key lights are used to light two subjects and serve as back light as well. Each lighting is set so that it keys one subject and backlights the other.
  80. 80. Cross light • A type of light that rakes across the subject. Cross light tends to be one of the most evocative types of lighting. •
  81. 81. Cutter • A long narrow flag for blocking light from the camera or an area of the set. •
  82. 82. Cyclorama or Cyc • A large smooth curving backdrop used in studios and sound stages to create a sky or limbo effect.
  83. 83. Cyclorama or Cyc light • One of the several lighting instruments specially designed to illuminate a cyclorama.