There
are all kinds of mechanical and electronic considerations that come into
play but it seems to me that a 500 watt tungsten lamp exposed for 1 second
should give the same amount of light to the sensor/film as a single 500ws
flash exposure.
On 10/19/2013 7:34 AM, Andrew Davidhazy
wrote:
I think that something vexing is the fact that the electronic flash delivers its light over a short time while tungsten lamps can (or do) deliver it over a long time. If one compares them at the assumed duration of the flash then the tungsten bulb will come out the weaker of the two by far. But if you compare them during an exposure time of a second or a minute or more then the tungsten lamp wins. It seems to me anyway.
Andy from Rochester
