Fresnel lantern
A Fresnel lantern (UK), or simply Fresnel (US), employs a Fresnel lens to wash light over an area of the stage. The distinctive lens has a 'stepped' appearance instead of the 'full' or 'smooth' appearance of those used in other lanterns. The resulting beam of light is wide and soft-edged, creating soft shadows, and is commonly used for back light, top light, and side light.
$150.00 

Ellipsoidal Reflector
The ellipsoidal reflector spotlight (ERS), also known as profile (after its ability to project the silhouette or profile of a Gobo), is the most abundant instrument type currently in theatrical use. Gobos have patterns cut into them, much like a stencil. These patterns are projected onto the stage. 
$400.00