Last Updated 5 days ago
What Is a PAR Light?
PAR stands for parabolic aluminized reflector. A traditional PAR lamp combines the light source, reflector and front lens in one lamp assembly. A PAR can is the housing that holds that lamp. In current use, “PAR” also describes fixtures with other optical designs, so confirm the actual model rather than assuming every PAR works the same way.
Traditional PAR Lamps and Cans
In a classic tungsten PAR can, the lamp determines much of the beam pattern. Different lamp versions provide different spreads, and an oval beam can be oriented by rotating the lamp where the fixture allows. The can is not a Fresnel with a continuously adjustable spot-to-flood mechanism.
The lamp and its compatible housing are separate items. Size, wattage, voltage and beam specification matter when ordering or replacing one; “a PAR” is not a complete equipment specification.
PAR-Style Fixtures with Separate Optics
Some fixtures use separate lamps, reflectors and interchangeable lenses. For example, ETC’s Source Four PAR uses an HPL lamp and separate beam-shaping lenses rather than a conventional sealed-beam PAR64 lamp. HMI PAR fixtures are another family used in film lighting.
LED PARs
An LED PAR is a modern fixture category, not a guarantee of the original sealed-beam construction. Models can differ in LED arrangement, colour mixing, fixed or zoom optics, beam spread and dimming behaviour. Judge the actual fixture’s output and controls rather than assuming it has the same beam as a tungsten PAR can.
PAR vs Fresnel
A conventional Fresnel uses a stepped lens and an adjustable optical arrangement to vary the beam from spot to flood. A traditional PAR lamp’s beam is largely set by its reflector and lens. Neither label by itself tells you which fixture will produce the better result for a shot.
Beam spread and softness are separate properties. A broad beam is not automatically soft: apparent source size at the subject determines shadow softness. PAR fixtures can also be bounced or used through diffusion when a larger apparent source is needed.
What to Specify on a Lighting Order
Give the fixture or lamp model, source type, required beam or lens, power requirements and intended use. For LED units, check colour controls, dimming and camera compatibility as well. That gives the rental house and electrical department useful information beyond “send a PAR.”
Related Terms
PAR A general term referring to a parabolic reflector-based lamp or fixture family known for directional beam output.
PAR Can The classic cylindrical housing associated with traditional PAR lighting instruments.
Hard Light Light that creates defined direction, sharper shadows, and a more contrasty look.
Fresnel A lighting fixture using a Fresnel lens, commonly with spot-to-flood adjustment.
Beam Spread The width of the light beam emitted by a fixture, ranging from narrower spots to wider floods.
Backlight A light placed behind a subject to separate them from the background and create edge definition.
Stage Lighting Lighting designed for live performance spaces such as theatres, clubs, and concerts.
Location Lighting Lighting used outside a permanent studio, often requiring portable and durable fixtures.
LED PAR A PAR-style fixture using LED technology, often common in modern stage and event setups.
Tungsten Light A traditional warm-colored lighting source often used in older PAR cans and studio fixtures.
HMI PAR A daylight-balanced PAR-style fixture known for strong output and useful throw in film production.
Gaffer The head of the lighting department responsible for planning and executing the lighting setup.