It's color gel, color filter, lighting gel, or simply just gel. It is a transparent colored material that is used in theatre, event production, photography, videography and cinematography to color light and for color correction. These modern gels are thin sheets of polycarbonate or polyester. When placed in front of a lighting fixture in the path of the beam, the color is projected.
E-Colour Gel is Rosco's comprehensive system of European color filters (LEE) for film and video production. E-Colour includes different filters and materials for color correction, color effects, diffusion and reflection. They're manufactured with the latest dye formulations and bonding technology to assure the highest levels of reliability and performance. E-Colour filters are available in 48 inch by 25 foot rolls, as well as 21 by 24 inch sheets. Basically you can order Lee numbers and get Rosco quality.
Quick Pricing Guide:
Apollo: $5.99 per sheet
Ecolor: $7.25 per sheet
Roscolux: $7.25 per sheet
Cinegel: $7.25 per sheet
Gam: $7.25 per sheet
Lee HT: $8.25
Click here for Roscolux Color list
Click here for Rosco E-Colour list
Click here for Gam to Rosco equivelent
Click here for swatch books
How to Apply Filters to Windows