Specifically designed for use on LED lights, the 12 x 12" SupaLite LED Low Light Loss Diffusers and Long Lasting LED Correction Filters 12-Pack from ProGel contains light diffusion filters of varying densities as well as a sampling of CTO filters and Minus Green filters.
The three diffusion filters absorb 9.9%, 9%, and 8% of light according to their density. The denser the filter, the softer the light. Filters can be stacked for an even softer effect.
The CTO and Minus Greens are designed to last significantly longer than standard color filters. The CTO filters are amber-toned for a warm look and shift the Kelvin temperature in increments of 2500K, 1600K, 1000K, and 800K. They can be used creatively or as conversion filters. The CTO 2500K, for instance, will convert a daylight-balanced light source to tungsten balance. These filters can also be stacked for intermediate strengths or a more pronounced effect.
The Minus Green filters are Magenta-colored and are mainly used to remove the green cast emitted by some fluorescent lamps. They are provided in 10, 3, and 2CC increments and can be stacked for greater correction.
The SupaLite and SupaLife filters fit several frames on the market such as the Impact Universal Filter Holder (IMUFHQ).