Thus, the light is 8 inches in diameter. A PAR's lamp and lens is all one unit. So, when you desire to change the lens for a different light spread, you will change a entire lens-lamp assembly, much like an automobile' s head light. Lenses are designated as Wide Flood, Medium Flood, Narrow, and Very Narrow. A wide flood lens has the most dimples while the very narrow one will have none or may be slightly rough in texture.
Color tends to be towards the red end of the spectrum, especially when dimmed.
More economical Lighter weight than other instruments. CONS Minimal light control Color temperature changes when dimmed. Entire lamp-lens assembly needs to be replaced when lamp burns out. ETC's Source Four PAR has a lamp that is separate from the lens. This provides for more economical lamp replacement and you have the option to change the lens without changing an entire lamp-lens assembly.