Flash and Monobloc Powerpoint
The history of the flash
- First flash - magnesium metal ground fine enough to make it burn rapidly to produce instant light.
- Next advancement contained flash
- Electronic flash built into camera : convenient fill light, low output can cast funny shadows
- Portable electronic flash : powered by batteries, typically high output
Image: http://www.the-digital-picture.com/reviews/canon-580ex-ii-speedlite-flash-review.aspx
- Monobloc : Powered by mains supply, high variable output
- Studio : Powered by mains supply, extremely expensive, very high variable output
- Flash power source : Powered by either mains power or by battery
- Flash duration is given as the time in milliseconds that it takes for the flash to 1/2 its peak value
- Inverse Square Law : double the distance away from the flash the subject will recieve 1/4 of the power
Workshop: Flash Self Portrait
Task: To take a self portrait using flash lighting and submit the RAW file. Photographs must be shot in manual and correctly exposed.
Photographed with a Canon 40D 50mm lens
f4 @1/160th of a second ISO 100
Lighting Set up:
The lighting setup was fairly simple. One speedlight was positioned on the front to the right to light the face (creating a few harsh shadows) and another behind to make it a little bit more interesting but mostly just because I seem to love lens flare. Another light or at least a reflector on the left side would have helped to fill in those shadows.
Digram Created at: www.lightingdiagrams.com
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