The Nothing
Immoral Support
FWIW
Vivitar 2700 flash from the late 70's
UVB - 000 mW/cm²
UVA - 001 mW/cm²
Canon 20D onboard flash, Canon XT onboard flash, Nikon P&S onboard flash, Sony P&S onboard flash
UVB - 000 mW/cm²
UVA - 000 mW/cm²
Every flash tested was done at full power at manual modes. Solarmeter 5.0 UV Meter was used to check for UVA and UVB.
The UVA output is negligible. You get more UVA exposure sitting next to a window on a partly cloudy day... Actually, because of the brevity of a camera flash, UVA exposure from an OLD flash is more akin to spending only 1/2500th of a second outdoors on a sunny day.
Vivitar 2700 flash from the late 70's
UVB - 000 mW/cm²
UVA - 001 mW/cm²
Canon 20D onboard flash, Canon XT onboard flash, Nikon P&S onboard flash, Sony P&S onboard flash
UVB - 000 mW/cm²
UVA - 000 mW/cm²
Every flash tested was done at full power at manual modes. Solarmeter 5.0 UV Meter was used to check for UVA and UVB.
The UVA output is negligible. You get more UVA exposure sitting next to a window on a partly cloudy day... Actually, because of the brevity of a camera flash, UVA exposure from an OLD flash is more akin to spending only 1/2500th of a second outdoors on a sunny day.