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TUNGSTEN LIGHTING
Incandescent lamps , or ' hot ' lights as they are sometimes called , have for long been the mainstay of photographic lighting . Even though they have now been largely superseded by flash in most situations , they remain irreplaceable for certain types of photograph .
All lamps that work by burning a filament are incandescent . The most familiar are domestic tungsten lamps , but those designed for photographic use burn more brightly . Some of the more intense ones use a quartz - like envelope instead of regular glass , and use halogen gas to prevent darkening with age and use . The colour temperature is usually 3200K , but sometimes 3400K . They are normally used with Type B film , although using a blue acetate sheet in front of the lamp can convert the light to the colour of daylight .
The output is measured in terms of the power drawn . The weakest operate at about 275 watts , but wattages of up to 1000 are common . The brighter the lamp , the hotter it is in use , and this kind of lighting needs care . In particular , it is dangerous to surround and enclose a lamp in some of the ways that flash units allow . Voltage fluctuations cause differences in the colour temperature , and a drop of 10 % is likely to lower the colour temperature by about 100K . The more sophisticated studio lamps have adjustable flaps close to the front of the unit ; known as ' barn doors ' , they can be used to prevent light spilling out in unwanted directions .
ABOVE Tungsten lighting remains irreplaceable for certain types of shot . Here , it has enabled the photographer to predict exactly how the scene will look , and added a ' vintage ' appearance to the set .
BELOW Tungsten is still without parallel when shooting room sets . Note the tungsten light sources in this scene include the household lights in the background .
Unlike flash , tungsten lighting is continuous , and one of the things that makes it so easy to work with is that you can see exactly what lighting effect will be caught on film ( with portable flash you must either guess or rely on experi- ence ) . They can be added to existing lighting , and the overall lighting set - up can be tuned by eye alone . For shooting room interiors , particularly large areas , they are without equal . Even if the depth of field must be good , and a slow film is being used , adjusting the exposure is simply a matter of leaving the shutter open longer ; the alternative with flash is to fire it repeatedly , but the recycling time needed between each discharge can make this process even longer than a continuous - light exposure .
Tungsten Lights
Lights are available with ' barn doors ' ( 1 and 3 ) , adjustable flaps that prevent light from falling in unwanted directions . ' Egg crates ' ( 2 ) make for at more directional tungsten light . Tungsten lights are available with a bar to conceal the lamp ( 4 ) .
RIGHT Softlight with bar ( right ) , totalight ( centre right and photoflood ( far right ) .
TUNGSTEN LIGHTING
Incandescent lamps , or ' hot ' lights as they are sometimes called , have for long been the mainstay of photographic lighting . Even though they have now been largely superseded by flash in most situations , they remain irreplaceable for certain types of photograph .
All lamps that work by burning a filament are incandescent . The most familiar are domestic tungsten lamps , but those designed for photographic use burn more brightly . Some of the more intense ones use a quartz - like envelope instead of regular glass , and use halogen gas to prevent darkening with age and use . The colour temperature is usually 3200K , but sometimes 3400K . They are normally used with Type B film , although using a blue acetate sheet in front of the lamp can convert the light to the colour of daylight .
The output is measured in terms of the power drawn . The weakest operate at about 275 watts , but wattages of up to 1000 are common . The brighter the lamp , the hotter it is in use , and this kind of lighting needs care . In particular , it is dangerous to surround and enclose a lamp in some of the ways that flash units allow . Voltage fluctuations cause differences in the colour temperature , and a drop of 10 % is likely to lower the colour temperature by about 100K . The more sophisticated studio lamps have adjustable flaps close to the front of the unit ; known as ' barn doors ' , they can be used to prevent light spilling out in unwanted directions .
ABOVE Tungsten lighting remains irreplaceable for certain types of shot . Here , it has enabled the photographer to predict exactly how the scene will look , and added a ' vintage ' appearance to the set .
BELOW Tungsten is still without parallel when shooting room sets . Note the tungsten light sources in this scene include the household lights in the background .
Unlike flash , tungsten lighting is continuous , and one of the things that makes it so easy to work with is that you can see exactly what lighting effect will be caught on film ( with portable flash you must either guess or rely on experi- ence ) . They can be added to existing lighting , and the overall lighting set - up can be tuned by eye alone . For shooting room interiors , particularly large areas , they are without equal . Even if the depth of field must be good , and a slow film is being used , adjusting the exposure is simply a matter of leaving the shutter open longer ; the alternative with flash is to fire it repeatedly , but the recycling time needed between each discharge can make this process even longer than a continuous - light exposure .
Tungsten Lights
Lights are available with ' barn doors ' ( 1 and 3 ) , adjustable flaps that prevent light from falling in unwanted directions . ' Egg crates ' ( 2 ) make for at more directional tungsten light . Tungsten lights are available with a bar to conceal the lamp ( 4 ) .
RIGHT Softlight with bar ( right ) , totalight ( centre right and photoflood ( far right ) .
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