Gain better control over your lighting and expand your imaging capabilities with the Elinchrom 20 Colour Correcting Filters 21cm. This set of 20 filters is compatible with heads having the 8.3-inch reflector and accessory holder from Elinchrom. The set includes six CTO (Color Temperature Orange) filters of varying power that convert the output of daylight-balanced lights to tungsten. It has four neutral density (ND) filters of varying power to reduce the light output. It even includes four diffusion filters of varying power that soften the light and provide an even light spread.