Fog vs haze
Dense fog, lighter mist, and haze for beams.
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Fog
ANSI E1.5 defines fog as a liquid aerosol in air that reduces visibility and reflects light.
Mist
The same standard defines mist as a liquid aerosol, not as optically dense as fog, but with larger droplets.
Haze
The standard does not define haze. Hazers are sold to make a lighter effect that shows light beams. Ask the maker what its hazer makes and which fluid it uses.
Which one
Fog hides and fills. Haze is meant to be seen in light. Both reduce visibility to some degree, so plan exits and alarms the same way. Fog and smoke alarms
FAQ
General information only. Follow your machine's manual and the label on any fluid. Fog and haze can set off smoke alarms and make it hard to see. Never disable an alarm. Check the venue's or building's rules before you use any effect. Dry ice can cause frostbite and gives off carbon dioxide, which can build up in low or enclosed spaces. Never touch it with bare hands, never seal it in a container, use it only with good ventilation, and keep it away from children and pets. Anyone with asthma or another breathing condition should ask a doctor before being around fog, haze, or dry ice effects.
Next: how fog machines work
Tank, pump, heater, nozzle.
