- Sun May 07, 2006 12:34 am
#151142
Thanks a lot!
You are very kind
Since most photography is done with the sun as a light source, most film is balanced for daylight. Until recently, in fact, tungsten-balanced film was only widely available as slide/transparency film (as two types - the rare tungsten A and the more common B, which have slightly different colour temperatures - 3400°K and 3200°K respectively). And for that reason flash units also have bulbs designed to produce light approximating midday sunlight in temperature. However, since sunlight is more blue than tungsten, light from a camera flash will look quite blue compared to the orange-yellow light of indoor tungsten light.
Intensity of common flashes
Total Light-15,500 lumen seconds.
Peak-500,000 lumens.
Peak of flash occurs 1/20 second
So, probably a typical flash light could have near 5000K and 15.500 lumen
You are very kind
Colour temperature and flash photography.MY Question what is the power/tep on a typical camera flash?
Looking at the bulb picture chart I would guess to use a HALOGEN low tensionbulb -- what wattage is typical.. 50w-100w for a camera flash..
Since most photography is done with the sun as a light source, most film is balanced for daylight. Until recently, in fact, tungsten-balanced film was only widely available as slide/transparency film (as two types - the rare tungsten A and the more common B, which have slightly different colour temperatures - 3400°K and 3200°K respectively). And for that reason flash units also have bulbs designed to produce light approximating midday sunlight in temperature. However, since sunlight is more blue than tungsten, light from a camera flash will look quite blue compared to the orange-yellow light of indoor tungsten light.
Intensity of common flashes
Total Light-15,500 lumen seconds.
Peak-500,000 lumens.
Peak of flash occurs 1/20 second
So, probably a typical flash light could have near 5000K and 15.500 lumen
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