Flash Facts and Skills

Flash fact #1: Every flash photograph is two exposures in one
Flash fact #2*: Flash exposure is not affected by shutter speed.
Flash fact #3: Flash illumination is dramatically affected by distance.
Flash fact #4: Your camera measures ambient light and flash illumination separately.
Flash fact #5: With automatic flash metering, the flash illumination is measured after the shutter button is pressed, and the flash output is adjusted accordingly.
Flash fact #6*: Every SLR camera with a mechanical shutter has a maximum flash sync shutter speed
Flash fact #7*:If you set your shutter speed faster than flash sync, or use Av mode with an aperture setting that requires a shutter speed faster than flash sync for proper exposure, the camera will automatically revert to flash sync speed when the shot is taken if a built-in or hotshoe-mounted flash is turned on.     




Prompt 1:
Finish this sentence: The further your subject, the more powerful flash you need
Prompt 2:
Will your exposure be brighter from the light produced by the flash, if you use a slower (longer) shutter speed? What type of light will a longer shutter speed increase in any type of exposure?
It will increase ambient light
Prompt 3:
What is the primary limitation of flash?
distance
Prompt 4:
What is the maximum sync speed of most DSLR cameras?
1/200th
Prompt 5:
What is a Guide Number on a flash?
a way of quantifying its maximum output in terms that a photographer can relate to
Prompt 6:
What is the problem with using a flash pointing directly at a subject? How can a photographer address this problem?
You can soften the light from the flash by bouncing it
Prompt 7:
What is the advantage of getting a flash off of the top of a camera?
  rotating it