Canon Color Filter SCF-EL Color Filter SCF-EL for Speedlite EL-1, Speedlite EL-1 Version 2The SCF color hard type filter sets include the Color Filter SCF ELOR1, which is effective in merging ambient incandescent light with the flashs bluish output to create a warm mood. The Color Filter SCF ELOR2 is useful for balancing out the red fogging typical of interior lighting, for more natural, realistic light. Both filters attach and detach with ease for quick and smooth set up.